{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20280","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","state":"PUBLISHED","assignerShortName":"cisco","dateReserved":"2025-10-08T11:59:15.403Z","datePublished":"2026-09-02T16:14:19.941Z","dateUpdated":"2026-09-18T12:10:36.299Z"},"containers":{"cna":{"title":"Cisco IOS XR Software Security Hardening Release: September 2026","metrics":[{"format":"cvssV3_1","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}}],"descriptions":[{"lang":"en","value":"As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20280 are related to improper checking or handling of exceptional condition issues that are grouped under the Common Weakness Enumeration (CWE) CWE-703."}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-iosxr-qg64NcM","name":"cisco-sa-hardening-iosxr-qg64NcM"}],"exploits":[{"lang":"en","value":"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."}],"source":{"advisory":"cisco-sa-hardening-iosxr-qg64NcM","discovery":"INTERNAL","defects":["CSCwt41683"]},"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Check or Handling of Exceptional Conditions","type":"cwe","cweId":"CWE-703"}]}],"affected":[{"vendor":"Cisco","product":"Cisco IOS XR Software","versions":[{"version":"6.5.29","status":"affected"},{"version":"7.0.1","status":"affected"},{"version":"6.5.26","status":"affected"},{"version":"6.5.25","status":"affected"},{"version":"6.5.28","status":"affected"},{"version":"6.5.90","status":"affected"},{"version":"7.1.1","status":"affected"},{"version":"7.0.90","status":"affected"},{"version":"6.7.1","status":"affected"},{"version":"7.0.2","status":"affected"},{"version":"7.1.15","status":"affected"},{"version":"7.2.1","status":"affected"},{"version":"7.1.2","status":"affected"},{"version":"6.7.2","status":"affected"},{"version":"7.0.11","status":"affected"},{"version":"7.0.12","status":"affected"},{"version":"7.0.14","status":"affected"},{"version":"7.1.25","status":"affected"},{"version":"7.2.12","status":"affected"},{"version":"7.3.1","status":"affected"},{"version":"7.1.3","status":"affected"},{"version":"6.7.3","status":"affected"},{"version":"7.4.1","status":"affected"},{"version":"7.2.2","status":"affected"},{"version":"6.7.4","status":"affected"},{"version":"6.5.31","status":"affected"},{"version":"7.3.15","status":"affected"},{"version":"7.3.16","status":"affected"},{"version":"6.8.1","status":"affected"},{"version":"7.4.15","status":"affected"},{"version":"6.5.32","status":"affected"},{"version":"7.3.2","status":"affected"},{"version":"7.5.1","status":"affected"},{"version":"7.4.16","status":"affected"},{"version":"7.3.27","status":"affected"},{"version":"7.6.1","status":"affected"},{"version":"7.5.2","status":"affected"},{"version":"7.8.1","status":"affected"},{"version":"7.6.15","status":"affected"},{"version":"7.5.12","status":"affected"},{"version":"7.8.12","status":"affected"},{"version":"7.3.3","status":"affected"},{"version":"7.7.1","status":"affected"},{"version":"6.8.2","status":"affected"},{"version":"7.3.4","status":"affected"},{"version":"7.4.2","status":"affected"},{"version":"6.7.35","status":"affected"},{"version":"6.9.1","status":"affected"},{"version":"7.6.2","status":"affected"},{"version":"7.5.3","status":"affected"},{"version":"7.7.2","status":"affected"},{"version":"6.9.2","status":"affected"},{"version":"7.9.1","status":"affected"},{"version":"7.10.1","status":"affected"},{"version":"7.8.2","status":"affected"},{"version":"7.5.4","status":"affected"},{"version":"6.5.33","status":"affected"},{"version":"7.8.22","status":"affected"},{"version":"7.7.21","status":"affected"},{"version":"7.9.2","status":"affected"},{"version":"7.3.5","status":"affected"},{"version":"7.5.5","status":"affected"},{"version":"7.11.1","status":"affected"},{"version":"7.9.21","status":"affected"},{"version":"7.10.2","status":"affected"},{"version":"24.1.1","status":"affected"},{"version":"7.6.3","status":"affected"},{"version":"7.3.6","status":"affected"},{"version":"7.5.52","status":"affected"},{"version":"7.11.2","status":"affected"},{"version":"24.2.1","status":"affected"},{"version":"24.1.2","status":"affected"},{"version":"24.2.11","status":"affected"},{"version":"24.3.1","status":"affected"},{"version":"24.4.1","status":"affected"},{"version":"24.2.2","status":"affected"},{"version":"7.8.23","status":"affected"},{"version":"7.11.21","status":"affected"},{"version":"24.2.20","status":"affected"},{"version":"24.3.2","status":"affected"},{"version":"24.4.10","status":"affected"},{"version":"6.5.35","status":"affected"},{"version":"25.1.1","status":"affected"},{"version":"24.4.2","status":"affected"},{"version":"24.3.20","status":"affected"},{"version":"24.4.15","status":"affected"},{"version":"25.2.1","status":"affected"},{"version":"6.5.351","status":"affected"},{"version":"25.1.2","status":"affected"},{"version":"24.3.30","status":"affected"},{"version":"25.3.1","status":"affected"},{"version":"6.5.352","status":"affected"},{"version":"24.4.30","status":"affected"},{"version":"24.2.21","status":"affected"},{"version":"25.4.1","status":"affected"},{"version":"25.2.2","status":"affected"},{"version":"25.2.15","status":"affected"},{"version":"7.2.0","status":"affected"},{"version":"7.0.0","status":"affected"},{"version":"25.2.30","status":"affected"},{"version":"6.5.353","status":"affected"},{"version":"26.1.1","status":"affected"},{"version":"25.1.30","status":"affected"},{"version":"25.3.15","status":"affected"},{"version":"26.2.100","status":"affected"},{"version":"25.4.2","status":"affected"},{"version":"26.2.1","status":"affected"},{"version":"25.4.30","status":"affected"},{"version":"26.1.2","status":"affected"},{"version":"25.4.201","status":"affected"},{"version":"26.2.101","status":"affected"},{"version":"25.2.21","status":"affected"}],"defaultStatus":"unknown"}],"providerMetadata":{"orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","shortName":"cisco","dateUpdated":"2026-09-18T12:10:36.299Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-02T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-20280"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-03T03:56:28.536Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-09-15T17:03:58.986Z"},"descriptions":[{"lang":"en","value":"The CVE Program recognizes that this CVE Record provides vulnerability information that a Supplier CNA believes is very important to consumers. The CVE Program has flagged this CVE Record as it assigns a single CVE ID to a collection of individual vulnerabilities which does not align with CVE's \"one vulnerability, one ID\" principle, and therefore provides incomplete information. For further clarification, please see the CVE Program's blog, \"Preserving Vulnerability-Level Identification\" linked below. Details within the CNA container below are viewable by clicking on the CNA name."}],"tags":["x_bundling-flagged-by-CVE-Program"],"references":[{"url":"https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification"}]}]}}