QwikSec

Security Database

CVE

CWE

Training

CVE-2025-11933

Published: Nov 21, 2025

Modified: Dec 8, 2025

PUBLISHED

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.

Vendor	Product	Versions
wofSSL	wolfSSL	affected `3.12.0 - < 5.8.4`

Weaknesses (CWE)

References

https://github.com/wolfSSL/wolfssl

https://github.com/wolfSSL/wolfssl/pull/9132

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.