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CVE-2025-11936

6.3 medium SSVC exploitation: poc Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.3 · wolfsslNVD modified 2026-10-19 13:10

Affected (CPE criteria) 1

  • cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

References 3