VULNERABILITY INTELLIGENCE

CVE-2025-11933

CVSS score6.5 MEDIUM
EPSS probability0.45%
CISA KEVNot currently listed
Published2025-11-21
Last modified2026-10-08
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • facts@wolfssl.com: CWE-20

Primary references