{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2025-13151","sourceIdentifier":"cret@cert.org","published":"2026-01-07T22:15:43.200","lastModified":"2026-06-17T08:33:34.880","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string."},{"lang":"es","value":"Desbordamiento de búfer basado en pila en libtasn1 versión: v4.20.0. La función no valida el tamaño de los datos de entrada, lo que resulta en un desbordamiento de búfer en asn1_expend_octet_string."}],"affected":[{"source":"cret@cert.org","affectedData":[{"vendor":"GnuTLS","product":"libtasn1","versions":[{"version":"0","lessThanOrEqual":"4.20.0","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-01-07T21:32:59.782767Z","id":"CVE-2025-13151","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:gnu:libtasn1:4.20.0:*:*:*:*:*:*:*","matchCriteriaId":"07E5B1B9-3891-490C-B148-DD952764A8A0"}]}]}],"references":[{"url":"https://gitlab.com/gnutls/libtasn1","source":"cret@cert.org","tags":["Product"]},{"url":"https://gitlab.com/gnutls/libtasn1/-/merge_requests/121","source":"cret@cert.org","tags":["Patch"]},{"url":"http://www.openwall.com/lists/oss-security/2026/01/08/5","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Patch"]},{"url":"https://www.kb.cert.org/vuls/id/271649","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}