289 lines
14 KiB
JSON
289 lines
14 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-75805",
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"assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
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"state": "PUBLISHED",
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"assignerShortName": "openssl",
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"dateReserved": "2026-08-18T09:34:32.659Z",
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"datePublished": "2026-09-29T15:32:20.408Z",
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"dateUpdated": "2026-11-10T12:49:43.797Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unaffected",
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"product": "OpenSSL",
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"vendor": "OpenSSL",
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"versions": [
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{
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"lessThan": "4.0.3",
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"status": "affected",
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"version": "4.0.0",
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"versionType": "semver"
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},
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{
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"lessThan": "3.6.5",
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"status": "affected",
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"version": "3.6.0",
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"versionType": "semver"
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},
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{
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"lessThan": "3.5.9",
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"status": "affected",
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"version": "3.5.0",
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"versionType": "semver"
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},
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{
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"lessThan": "3.4.8",
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"status": "affected",
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"version": "3.4.0",
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"versionType": "semver"
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},
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{
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"lessThan": "3.0.23",
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"status": "affected",
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"version": "3.0.0",
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"versionType": "semver"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "reporter",
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"value": "Bhabani Sankar Das"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "Bhabani Sankar Das"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "Norbert Pocs"
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}
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],
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"datePublic": "2026-09-29T14:21:57.000Z",
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "Issue summary: A CMP client that requests certificate revocation on the basis<br>of a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when<br>processing a crafted revocation response. <br><br>Impact summary: The NULL pointer dereference happens on a read which <br>leads to a crash and a Denial of Service for the affected client application.<br><br>CWE: CWE-476: NULL-pointer dereference<br><br>Description: A CMP client revoking a certificate has to tell the server which<br>certificate to revoke, and may do so by supplying a PKCS#10 CSR instead of the<br>certificate itself or its issuer name and serial number. This is<br>'openssl cmp -cmd rr -csr <file>' on the command line, or<br>OSSL_CMP_exec_RR_ses() with the certificate supplied via<br>OSSL_CMP_CTX_set1_p10CSR() through the API.<br><br>A CSR does not contain the issuer name and serial number of the certificate,<br>so the client does not send them. A server may optionally name the<br>certificate it revoked in its response, and the client then compares that<br>name against what it sent. Having sent neither an issuer name nor a serial<br>number, it has nothing to compare against, and a server returning a specially<br>crafted name causes the client to read from a NULL pointer and crash.<br><br>The revocation response is checked for valid message protection before<br>the affected code is reached, so an attacker must be a malicious or<br>compromised CMP server, or a man-in-the-middle in possession of the<br>secret used for message protection. Clients that identify the certificate<br>to be revoked by a certificate or by issuer and serial number rather<br>than by a PKCS#10 CSR are not affected.<br><br>FIPS impact: no<br>No FIPS modules are affected by this issue, as the CMP protocol<br>implementation is outside the OpenSSL FIPS module boundary."
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}
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],
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"value": "Issue summary: A CMP client that requests certificate revocation on the basis\nof a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when\nprocessing a crafted revocation response. \n\nImpact summary: The NULL pointer dereference happens on a read which \nleads to a crash and a Denial of Service for the affected client application.\n\nCWE: CWE-476: NULL-pointer dereference\n\nDescription: A CMP client revoking a certificate has to tell the server which\ncertificate to revoke, and may do so by supplying a PKCS#10 CSR instead of the\ncertificate itself or its issuer name and serial number. This is\n'openssl cmp -cmd rr -csr <file>' on the command line, or\nOSSL_CMP_exec_RR_ses() with the certificate supplied via\nOSSL_CMP_CTX_set1_p10CSR() through the API.\n\nA CSR does not contain the issuer name and serial number of the certificate,\nso the client does not send them. A server may optionally name the\ncertificate it revoked in its response, and the client then compares that\nname against what it sent. Having sent neither an issuer name nor a serial\nnumber, it has nothing to compare against, and a server returning a specially\ncrafted name causes the client to read from a NULL pointer and crash.\n\nThe revocation response is checked for valid message protection before\nthe affected code is reached, so an attacker must be a malicious or\ncompromised CMP server, or a man-in-the-middle in possession of the\nsecret used for message protection. Clients that identify the certificate\nto be revoked by a certificate or by issuer and serial number rather\nthan by a PKCS#10 CSR are not affected.\n\nFIPS impact: no\nNo FIPS modules are affected by this issue, as the CMP protocol\nimplementation is outside the OpenSSL FIPS module boundary."
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}
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],
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"metrics": [
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{
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"format": "other",
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"other": {
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"content": {
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"text": "Low"
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},
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"type": "https://openssl-library.org/policies/general/security-policy/"
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-476",
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"description": "CWE-476 NULL-pointer dereference",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
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"shortName": "openssl",
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"dateUpdated": "2026-09-29T15:32:20.408Z"
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},
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"references": [
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{
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"name": "OpenSSL Advisory",
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"tags": [
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"vendor-advisory"
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],
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"url": "https://openssl-library.org/news/secadv/20260929.txt"
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},
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{
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"name": "4.0.3 git commit",
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"tags": [
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"patch"
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],
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"url": "https://github.com/openssl/openssl/commit/7ca0ccb5172a577e9b87267d77bfe21e5481a5e7"
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},
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{
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"name": "3.6.5 git commit",
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"tags": [
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"patch"
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],
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"url": "https://github.com/openssl/openssl/commit/7588db7fef14209c3caa3a101d11a02006b19166"
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},
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{
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"name": "3.5.9 git commit",
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"tags": [
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"patch"
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],
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"url": "https://github.com/openssl/openssl/commit/9eb2a8a9b86136cdb39d6d7d50644dd66941cdc3"
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},
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{
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"name": "3.4.8 git commit",
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"tags": [
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"patch"
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],
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"url": "https://github.com/openssl/openssl/commit/abf02872a4b71767ecc72293424420f5b009190f"
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"title": "NULL Pointer Dereference in CMP Client Revocation Response Handling",
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"x_generator": {
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"engine": "Vulnogram 0.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.3,
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"attackVector": "NETWORK",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "LOW",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "NONE"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-29T16:54:03.315064Z",
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"id": "CVE-2026-75805",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-29T16:54:39.263Z"
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}
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},
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{
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"x_adpType": "supplier",
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"providerMetadata": {
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"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
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"shortName": "siemens-SADP",
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"dateUpdated": "2026-11-10T12:49:43.797Z"
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},
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"affected": [
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{
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)",
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"versions": [
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{
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"status": "affected",
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"version": "V3.1.7",
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"lessThan": "*",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unknown"
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},
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{
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)",
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"versions": [
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{
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"status": "affected",
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"version": "V3.1.7",
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"lessThan": "*",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unknown"
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},
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{
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)",
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"versions": [
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{
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"status": "affected",
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"version": "V3.1.7",
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"lessThan": "*",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unknown"
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},
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{
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)",
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"versions": [
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{
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"status": "affected",
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"version": "V3.1.7",
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"lessThan": "*",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unknown"
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},
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{
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"vendor": "Siemens",
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"product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)",
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"versions": [
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{
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"status": "affected",
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"version": "V3.1.7",
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"lessThan": "*",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unknown"
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}
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],
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"references": [
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{
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"url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
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}
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]
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}
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]
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}
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} |