282 lines
11 KiB
JSON
282 lines
11 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-2026-12503",
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"assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
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"state": "PUBLISHED",
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"assignerShortName": "NCSC.ch",
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"dateReserved": "2026-06-17T09:48:11.206Z",
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"datePublished": "2026-07-24T13:57:56.691Z",
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"dateUpdated": "2026-07-24T14:57:47.202Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "455daabc-a392-441d-aa46-37d35189897c",
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"shortName": "NCSC.ch",
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"dateUpdated": "2026-07-24T13:57:56.691Z"
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},
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"title": "Loytec LINX firmware: Improper Link Resolution in /usr/bin/larm_starter",
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-59",
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"description": "CWE-59 Improper link resolution before file access ('link following')",
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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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"impacts": [
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{
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"capecId": "CAPEC-122",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-122 Privilege Abuse"
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}
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]
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},
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{
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"capecId": "CAPEC-233",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-233 Privilege Escalation"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "Loytec",
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"product": "LIP-ME20xC",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "8.4.16",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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},
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{
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"vendor": "Loytec",
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"product": "L-INX",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "8.4.16",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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},
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{
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"vendor": "Loytec",
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"product": "L-GATE",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "8.4.16",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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},
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{
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"vendor": "Loytec",
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"product": "L-ROC",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "8.4.16",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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},
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{
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"vendor": "Loytec",
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"product": "L-IOB",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "8.4.16",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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},
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{
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"vendor": "Loytec",
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"product": "L-DALI",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "8.4.16",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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},
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{
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"vendor": "Loytec",
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"product": "L-VIS",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "8.4.16",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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},
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{
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"vendor": "Loytec",
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"product": "L-PAD",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "8.4.16",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Improper Link Resolution (CWE-59) in `/usr/bin/larm_starter` in Loytec L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an authenticated `larmapp` attacker to make `/etc/passwd` writable by the `larmapp` group (leading to root privilege escalation) via a symlink attack on `/etc/lighttpd/ssl/server.pem`.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "Improper Link Resolution (CWE-59) in `/usr/bin/larm_starter` in Loytec L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an authenticated `larmapp` attacker to make `/etc/passwd` writable by the `larmapp` group (leading to root privilege escalation) via a symlink attack on `/etc/lighttpd/ssl/server.pem`."
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}
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]
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}
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],
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"references": [
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{
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"url": "https://www.loytec.com/support/product-security/advisories/8520-dibt-cve-20260526-0002-symlink-following-in-chown-chmod-critical",
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"tags": [
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"vendor-advisory"
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]
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV4_0": {
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "HIGH",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "HIGH",
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"subIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "HIGH",
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"subAvailabilityImpact": "NONE",
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"exploitMaturity": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"vulnerabilityResponseEffort": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"version": "4.0",
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"baseSeverity": "CRITICAL",
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"baseScore": 9.2,
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"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:H/SA:N"
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}
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "Upgrade to firmware 8.4.18.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "Upgrade to firmware 8.4.18."
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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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"value": "Daniel Hulliger, armasuisse CYD Campus",
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"type": "finder"
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},
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{
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"lang": "en",
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"value": "Damian Pfammatter, armasuisse CYD Campus",
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"type": "finder"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"x_generator": {
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"engine": "Vulnogram 1.0.2"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-07-24T14:57:37.633031Z",
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"id": "CVE-2026-12503",
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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": "no"
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},
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{
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"Technical Impact": "total"
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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": "2026-07-24T14:57:47.202Z"
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}
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}
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]
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}
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} |