{"id":"CVE-2026-25832","state":"PUBLISHED","title":"In Mbed TLS 3.6.x before 3.6.7 and 4.1.x before 4.1.2, the TLS 1.3 client accepts HelloRetryRequest selecting an unadvertised group.","description":"In Mbed TLS 3.6.x before 3.6.7 and 4.1.x before 4.1.2, the TLS 1.3 client accepts HelloRetryRequest selecting an unadvertised group.","publishedAt":"2026-09-14T00:00:00.000Z","updatedAt":"2026-09-14T16:00:15.430Z","severity":{"score":3.7,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"mitre"},"assigner":"mitre","products":["TrustedFirmware Mbed TLS"],"affected":[{"vendor":"TrustedFirmware","product":"Mbed TLS","defaultStatus":"unaffected","versions":[{"version":"3.5.0","status":"affected","lessThan":"3.6.7","versionType":"semver"},{"version":"4.0.0","status":"affected","lessThan":"4.1.2","versionType":"semver"}]}],"references":["https://mbed-tls.readthedocs.io/en/latest/security-advisories/","https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-07-tls13-hrr-unadvertised-group/"],"weaknesses":["CWE-669"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/25xxx/CVE-2026-25832.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-25832","state":"PUBLISHED","datePublished":"2026-09-14T00:00:00.000Z","dateUpdated":"2026-09-14T16:00:15.430Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-02-06T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In Mbed TLS 3.6.x before 3.6.7 and 4.1.x before 4.1.2, the TLS 1.3 client accepts HelloRetryRequest selecting an unadvertised group."}],"affected":[{"vendor":"TrustedFirmware","product":"Mbed TLS","defaultStatus":"unaffected","versions":[{"version":"3.5.0","status":"affected","lessThan":"3.6.7","versionType":"semver"},{"version":"4.0.0","status":"affected","lessThan":"4.1.2","versionType":"semver"}]}],"references":[{"url":"https://mbed-tls.readthedocs.io/en/latest/security-advisories/"},{"url":"https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-07-tls13-hrr-unadvertised-group/"}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-669","description":"CWE-669 Incorrect Resource Transfer Between Spheres","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-09-14T06:45:01.918Z"},"x_generator":{"engine":"enrichogram 0.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-14T15:59:33.992126Z","id":"CVE-2026-25832","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-14T16:00:15.430Z"}}]}}}