VDB
CVE-2025-11936
CVE-2025-11936
PUBLISHED
CVSS 6.3 MEDIUM
Reported by wolfSSL · Published November 21, 2025
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.
Risk Scores
CVSS 4.0
6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| wolfSSL | wolfSSL | 3.12.0 |
| wolfSSL | wolfSSL | 3.12.0 |
Timeline
- Jan 21, 1970 Fix PR Merged
- Nov 21, 2025 CVE Published
- Nov 22, 2025 EPSS Score
- Nov 22, 2025 Coalition ESS Score
- Nov 28, 2025 EPSS Score
- Nov 30, 2025 Coalition ESS Score
- Dec 3, 2025 EPSS Score
- Dec 3, 2025 Coalition ESS Score
- Dec 6, 2025 Coalition ESS Score
- Dec 8, 2025 CVE Updated
- Dec 9, 2025 EPSS Score
- Dec 15, 2025 EPSS Score