{"id":"CVE-2025-52496","details":"Mbed TLS before 3.6.4 has a race condition in AESNI detection if certain compiler optimizations occur. An attacker may be able to extract an AES key from a multithreaded program, or perform a GCM forgery.","modified":"2026-05-18T05:59:33.926311591Z","published":"2025-07-04T00:00:00Z","database_specific":{"cwe_ids":["CWE-733"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/52xxx/CVE-2025-52496.json","cna_assigner":"mitre","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"fixed":"3.6.4"}]},{"source":"CPE_FIELD","extracted_events":[{"fixed":"3.6.4"}]},{"source":"DESCRIPTION","extracted_events":[{"fixed":"3.6.4"}]}]},"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/08/msg00013.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/52xxx/CVE-2025-52496.json"},{"type":"ADVISORY","url":"https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-1.md"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-52496"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mbed-tls/mbedtls","events":[{"introduced":"0"},{"fixed":"c765c831e5c2a0971410692f92f7a81d6ec65ec2"}],"database_specific":{"source":"CPE_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"3.6.4"}],"cpe":"cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*"}}],"versions":["v2.26.0","mbedtls-2.26.0","v2.24.0","mbedtls-2.24.0","mbedtls-2.19.1","mbedtls-2.22.0d0","mbedtls-2.21.0","mbedtls-2.20.0","mbedtls-2.20.0d0","mbedtls-2.19.0d2","mbedtls-2.19.0","mbedtls-2.19.0d1","mbedtls-2.16.0","mbedtls-2.14.0","mbedtls-2.13.1","mbedtls-2.13.0","mbedtls-2.12.0","mbedtls-2.11.0","mbedtls-2.10.0","mbedtls-2.7.0","mbedtls-2.9.0","mbedtls-2.8.0","mbedtls-2.8.0-rc1","mbedtls-2.7.0-rc1","mbedtls-2.6.0","mbedtls-2.6.0-rc1","mbedtls-2.5.1","mbedtls-2.5.0","mbedtls-2.4.0","mbedtls-2.2.1","yotta-2.3.1","mbedtls-2.3.0","mbedtls-2.2.0","mbedos-release-15-11","mbedos-techcon-oob2","mbedtls-2.1.2","mbedtls-2.1.0","mbedtls-2.1.1","beta-oob-2","mbedtls-2.0.0","polarssl-1.3.9","polarssl-1.3.8","polarssl-1.3.7","polarssl-1.3.6","polarssl-1.3.5","polarssl-1.3.4","polarssl-1.3.3","polarssl-1.3.2","polarssl-1.3.1","polarssl-1.3.0","polarssl-1.3.0-rc0","polarssl-1.2.6","polarssl-1.2.5","polarssl-1.2.4","polarssl-1.2.2","polarssl-1.2.1","polarssl-1.2.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-52496.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N"}]}