VULNERABILITY INTELLIGENCE

CVE-2025-11936

CVSS score5.3 MEDIUM
EPSS probability0.46%
CISA KEVNot currently listed
Published2025-11-21
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Description

Improper input validation in the TLS 1.3 KeyShareEntry parsing in wolfSSL v5.8.2 on multiple platforms allows a remote unauthenticated attacker to cause a denial-of-service by sending a crafted ClientHello message containing duplicate KeyShareEntry values for the same supported group, leading to excessive CPU and memory consumption during ClientHello processing.

Weakness classification

  • facts@wolfssl.com: CWE-20

Primary references