280 lines
14 KiB
JSON
280 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-2026-21909",
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"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
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"state": "PUBLISHED",
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"assignerShortName": "juniper",
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"dateReserved": "2026-01-05T17:32:48.710Z",
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"datePublished": "2026-01-15T20:22:44.674Z",
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"dateUpdated": "2026-01-15T20:52:42.400Z"
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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": "Junos OS",
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"vendor": "Juniper Networks",
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"versions": [
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{
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"lessThan": "23.2R2",
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"status": "affected",
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"version": "23.2",
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"versionType": "semver"
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},
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{
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"lessThan": "23.4R1-S2, 23.4R2",
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"status": "affected",
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"version": "23.4",
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"versionType": "semver"
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},
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{
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"lessThan": "24.1R2",
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"status": "affected",
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"version": "24.1",
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"versionType": "semver"
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},
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{
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"lessThan": "23.2R1",
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"status": "unaffected",
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"version": "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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"defaultStatus": "unaffected",
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"product": "Junos OS Evolved",
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"vendor": "Juniper Networks",
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"versions": [
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{
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"lessThan": "23.2R2-EVO",
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"status": "affected",
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"version": "23.2",
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"versionType": "semver"
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},
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{
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"lessThan": "23.4R1-S2-EVO, 23.4R2-EVO",
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"status": "affected",
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"version": "23.4",
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"versionType": "semver"
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},
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{
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"lessThan": "24.1R2-EVO",
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"status": "affected",
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"version": "24.1",
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"versionType": "semver"
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},
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{
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"lessThan": "23.2R1-EVO",
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"status": "unaffected",
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"version": "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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"configurations": [
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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": "This issue affects systems with IS-IS configured. For example:<br><br><tt>[protocols isis interface lo.0 ...]<br>\n\n[protocols isis interface <interface> ...]<br>[interfaces <interface> unit <n> family iso]</tt>"
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}
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],
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"value": "This issue affects systems with IS-IS configured. For example:\n\n[protocols isis interface lo.0 ...]\n\n\n[protocols isis interface <interface> ...]\n[interfaces <interface> unit <n> family iso]"
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}
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],
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"datePublic": "2026-01-14T17:00:00.000Z",
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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": "A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated attacker controlling an adjacent IS-IS neighbor to send a specific update packet causing a memory leak. Continued receipt and processing of these packets will exhaust all available memory, crashing rpd and creating a Denial of Service (DoS) condition.<br><br>Memory usage can be monitored through the use of the 'show task memory detail' command. For example:<br><br><tt>user@junos> show task memory detail | match ted-infra<br> TED-INFRA-COOKIE 25 1072 28 1184 229<br></tt><br>\n\n<tt>user@junos> \n\nshow task memory detail | match ted-infra<br> TED-INFRA-COOKIE <b><span style=\"background-color: rgb(239, 250, 102);\">31</span></b> <b><span style=\"background-color: rgb(239, 250, 102);\">1360</span></b> 34 1472 307</tt><br><br><p>This issue affects:</p><p>Junos OS: </p><ul><li>from 23.2 before 23.2R2, </li><li>from 23.4 before 23.4R1-S2, 23.4R2, </li><li>from 24.1 before 24.1R2; </li></ul><p>Junos OS Evolved: </p><ul><li>from 23.2 before 23.2R2-EVO, </li><li>from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO, </li><li>from 24.1 before 24.1R2-EVO.</li></ul>This issue does not affect Junos OS versions before 23.2R1 or Junos OS Evolved versions before 23.2R1-EVO."
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}
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],
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"value": "A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated attacker controlling an adjacent IS-IS neighbor to send a specific update packet causing a memory leak. Continued receipt and processing of these packets will exhaust all available memory, crashing rpd and creating a Denial of Service (DoS) condition.\n\nMemory usage can be monitored through the use of the 'show task memory detail' command. For example:\n\nuser@junos> show task memory detail | match ted-infra\n TED-INFRA-COOKIE 25 1072 28 1184 229\n\n\n\nuser@junos> \n\nshow task memory detail | match ted-infra\n TED-INFRA-COOKIE 31 1360 34 1472 307\n\nThis issue affects:\n\nJunos OS: \n\n * from 23.2 before 23.2R2, \n * from 23.4 before 23.4R1-S2, 23.4R2, \n * from 24.1 before 24.1R2; \n\n\nJunos OS Evolved: \n\n * from 23.2 before 23.2R2-EVO, \n * from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO, \n * from 24.1 before 24.1R2-EVO.\n\n\nThis issue does not affect Junos OS versions before 23.2R1 or Junos OS Evolved versions before 23.2R1-EVO."
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}
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],
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"exploits": [
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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": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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}
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],
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"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "ADJACENT_NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 6.5,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"version": "3.1"
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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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},
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{
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"cvssV4_0": {
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"Automatable": "YES",
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"Recovery": "AUTOMATIC",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"attackVector": "ADJACENT",
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"baseScore": 7.1,
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"baseSeverity": "HIGH",
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"privilegesRequired": "NONE",
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"providerUrgency": "GREEN",
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"subAvailabilityImpact": "LOW",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"userInteraction": "NONE",
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"valueDensity": "CONCENTRATED",
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"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M/U:Green",
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"version": "4.0",
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"vulnAvailabilityImpact": "HIGH",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnerabilityResponseEffort": "MODERATE"
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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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}
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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-401",
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"description": "CWE-401 Missing Release of Memory after Effective Lifetime",
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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": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
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"shortName": "juniper",
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"dateUpdated": "2026-01-15T20:22:44.674Z"
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},
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"references": [
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{
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"tags": [
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"vendor-advisory"
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],
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"url": "https://supportportal.juniper.net/JSA106008"
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},
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{
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"tags": [
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"vendor-advisory"
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],
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"url": "https://kb.juniper.net/JSA106008"
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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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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "The following software releases have been updated to resolve this specific issue:<br>Junos OS: 23.2R2, 23.4R1-S2, 23.4R2, 24.1R2, 24.2R1<span style=\"background-color: rgb(255, 255, 255);\">, and all subsequent releases.</span>\n\n<br> Junos OS Evolved: 23.2R2-EVO, 23.4R1-S2-EVO, 23.4R2-EVO, 24.1R2-EVO, 24.2R1-EVO, <span style=\"background-color: rgb(255, 255, 255);\">and all subsequent releases.</span>\n\n<br><br><br>"
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}
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],
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"value": "The following software releases have been updated to resolve this specific issue:\nJunos OS: 23.2R2, 23.4R1-S2, 23.4R2, 24.1R2, 24.2R1, and all subsequent releases.\n\n\n Junos OS Evolved: 23.2R2-EVO, 23.4R1-S2-EVO, 23.4R2-EVO, 24.1R2-EVO, 24.2R1-EVO, and all subsequent releases."
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}
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],
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"source": {
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"advisory": "JSA106008",
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"defect": [
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"1793982"
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],
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"discovery": "USER"
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},
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"title": "Junos OS and Junos OS Evolved: Receipt of specific IS-IS update packet causes memory leak leading to RPD crash",
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"workarounds": [
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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": "There are no known workarounds for this issue."
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}
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],
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"value": "There are no known workarounds for this issue."
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}
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],
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"x_generator": {
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"engine": "Vulnogram 0.1.0-dev"
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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": "2026-01-15T20:52:37.531214Z",
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"id": "CVE-2026-21909",
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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": "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": "2026-01-15T20:52:42.400Z"
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}
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}
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]
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}
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} |