CVE-2025-11933
DoS Vulnerability in wolfSSL TLS 1.3 CKS Extension
- State
- Published
- Severity
- 2.3 Low
- Published
- Nov 21, 2025
- Updated
- Dec 8, 2025
- Reserved
- Oct 17, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 2.3 Low | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L | wolfSSL |
Weaknesses
- CWE-20 Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
wolfSSLwofSSL |
|
References
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