216 lines
8.6 KiB
JSON
216 lines
8.6 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-2026-89147",
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-09-11T01:23:34.216Z",
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"datePublished": "2026-09-11T10:46:56.944Z",
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"dateUpdated": "2026-09-24T14:21:35.209Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"shortName": "VulnCheck",
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"dateUpdated": "2026-09-24T14:21:35.209Z"
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},
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"datePublic": "2026-09-09T00:00:00.000Z",
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"title": "Net-SNMP through 5.9.5.2 Denial of Service via Blocking Unauthenticated SMUX Read",
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"descriptions": [
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{
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"lang": "en",
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"value": "Net-SNMP through 5.9.5.2 contains a denial of service vulnerability in the SMUX module where smux_accept() performs an unauthenticated blocking read without timeout on newly accepted connections. An unauthenticated remote client can connect to the SMUX listener and send no data, causing the single-threaded snmpd main loop to block indefinitely and suspend all SNMP processing."
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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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"lang": "en",
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"cweId": "CWE-1088",
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"description": "CWE-1088: Synchronous Access of Remote Resource without Timeout",
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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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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-400",
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"description": "CWE-400: Uncontrolled Resource Consumption",
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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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"affected": [
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{
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"defaultStatus": "unaffected",
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"vendor": "net-snmp",
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"product": "Net-SNMP",
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"packageURL": "pkg:github/net-snmp/net-snmp",
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"repo": "https://github.com/net-snmp/net-snmp",
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"versions": [
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{
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"version": "0",
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"lessThanOrEqual": "5.9.5.2",
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"status": "affected",
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"versionType": "custom"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:net-snmp:net-snmp:*:*:*:*:*:*:*:*",
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"versionEndIncluding": "5.9.5.2"
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}
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]
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}
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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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"cvssV3_1": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"version": "3.1",
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"baseSeverity": "HIGH",
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"baseScore": 7.5,
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
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}
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},
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{
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"format": "CVSS",
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"cvssV4_0": {
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"version": "4.0",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.7,
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"baseSeverity": "HIGH"
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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://gist.github.com/thesmartshadow/001cea595e75fed6aaea7389666dc9eb",
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"name": "Unauthenticated remote denial of service in Net-SNMP snmpd via blocking pre-authentication SMUX read",
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"tags": [
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"third-party-advisory"
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]
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},
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{
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"url": "https://github.com/net-snmp/net-snmp/blob/v5.9.5.2/agent/mibgroup/smux/smux.c",
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"name": "agent/mibgroup/smux/smux.c at v5.9.5.2",
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"tags": [
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"technical-description"
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]
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},
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{
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"url": "https://github.com/net-snmp/net-snmp",
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"name": "Product",
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"tags": [
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"product"
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]
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},
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{
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"name": "VulnCheck Advisory: Net-SNMP through 5.9.5.2 Denial of Service via Blocking Unauthenticated SMUX Read",
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"tags": [
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"third-party-advisory"
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],
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"url": "https://www.vulncheck.com/advisories/net-snmp-through-5.9.5.2-denial-of-service-via-blocking-unauthenticated-smux-read"
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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": "Ali Firas",
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"type": "finder"
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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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"x_generator": {
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"engine": "vulncheck-endgame"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://gist.github.com/thesmartshadow/001cea595e75fed6aaea7389666dc9eb",
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"tags": [
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"exploit"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-15T16:06:21.094512Z",
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"id": "CVE-2026-89147",
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"options": [
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{
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"Exploitation": "poc"
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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": "2026-09-15T16:08:19.500Z"
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}
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}
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]
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}
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} |