Disclosure summary
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.
Source-reported weakness categories
CWE-20
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2025-11933
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| wolfssl | wolfssl | * {"versionStartIncluding":"5.8.2","versionEndExcluding":"5.8.4"} |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Product
- github.com — Issue Tracking, Patch
PUBLISHED 2025-11-21T18:15:44-05:00
MODIFIED 2026-10-08T06:10:00-04:00
INGESTED 2026-10-08T12:35:23-04:00