{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-20248","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","state":"PUBLISHED","assignerShortName":"cisco","dateReserved":"2024-10-10T19:15:13.238Z","datePublished":"2025-09-10T16:06:49.860Z","dateUpdated":"2026-02-26T17:48:42.697Z"},"containers":{"cna":{"title":"Cisco IOS XR Software Image Verification Bypass Vulnerability","metrics":[{"format":"cvssV3_1","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","baseScore":6,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"}}],"descriptions":[{"lang":"en","value":"A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.\r\n\r\nThis vulnerability is due to incomplete validation of files during the installation of an .iso file. An attacker could exploit this vulnerability by modifying contents of the .iso image and then installing and activating it on the device. A successful exploit could allow the attacker to load an unsigned file as part of the image activation process."}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrsig-UY4zRUCG","name":"cisco-sa-xrsig-UY4zRUCG"}],"exploits":[{"lang":"en","value":"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}],"source":{"advisory":"cisco-sa-xrsig-UY4zRUCG","discovery":"EXTERNAL","defects":["CSCwm03455"]},"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Verification of Cryptographic Signature","type":"cwe","cweId":"CWE-347"}]}],"affected":[{"vendor":"Cisco","product":"Cisco IOS XR Software","versions":[{"version":"6.5.3","status":"affected"},{"version":"6.5.29","status":"affected"},{"version":"6.5.1","status":"affected"},{"version":"6.6.1","status":"affected"},{"version":"6.5.2","status":"affected"},{"version":"6.5.92","status":"affected"},{"version":"6.5.15","status":"affected"},{"version":"6.6.2","status":"affected"},{"version":"7.0.1","status":"affected"},{"version":"6.6.25","status":"affected"},{"version":"6.5.26","status":"affected"},{"version":"6.6.11","status":"affected"},{"version":"6.5.25","status":"affected"},{"version":"6.5.28","status":"affected"},{"version":"6.5.93","status":"affected"},{"version":"6.6.12","status":"affected"},{"version":"6.5.90","status":"affected"},{"version":"7.0.0","status":"affected"},{"version":"7.1.1","status":"affected"},{"version":"7.0.90","status":"affected"},{"version":"6.6.3","status":"affected"},{"version":"6.7.1","status":"affected"},{"version":"7.0.2","status":"affected"},{"version":"7.1.15","status":"affected"},{"version":"7.2.0","status":"affected"},{"version":"7.2.1","status":"affected"},{"version":"7.1.2","status":"affected"},{"version":"6.7.2","status":"affected"},{"version":"7.1.25","status":"affected"},{"version":"6.6.4","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":"6.5.31","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":"7.6.15","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":"7.8.1","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":"7.8.2","status":"affected"},{"version":"7.5.4","status":"affected"},{"version":"6.5.33","status":"affected"},{"version":"7.8.22","status":"affected"},{"version":"7.10.1","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":"7.6.3","status":"affected"},{"version":"24.1.1","status":"affected"},{"version":"7.3.6","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":"24.4.15","status":"affected"},{"version":"6.5.351","status":"affected"},{"version":"6.5.352","status":"affected"}],"defaultStatus":"unknown"}],"providerMetadata":{"orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","shortName":"cisco","dateUpdated":"2025-09-10T16:06:49.860Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2025-20248","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2025-09-11T03:56:26.903508Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-26T17:48:42.697Z"}}]}}