{"id":"CVE-2025-11933","details":"Improper Input Validation in the TLS 1.3 CKS extension parsing in wolfSSL 5.8.2 and earlier on multiple platforms allows a remote unauthenticated attacker to potentially cause a denial-of-service via a crafted ClientHello message with duplicate CKS extensions.","modified":"2026-03-12T17:35:31.623990Z","published":"2025-11-21T23:15:44.293Z","references":[{"type":"FIX","url":"https://github.com/wolfSSL/wolfssl/pull/9132"},{"type":"PACKAGE","url":"https://github.com/wolfSSL/wolfssl"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wolfssl/wolfssl","events":[{"introduced":"decea12e223869c8f8f3ab5a53dc90b69f436eb2"},{"fixed":"59f4fa568615396fbf381b073b220d1e8d61e4c2"}],"database_specific":{"versions":[{"introduced":"5.8.2"},{"fixed":"5.8.4"}]}}],"versions":["v5.8.2-stable"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-11933.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}