Improper input validation in Apple macOS
CVE-2025-11933
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.004 (35.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apple Macos
- Linux Linux_kernel
- Wofssl Wolfssl — versions 3.12.0
- Wolfssl
Weakness classification (CWE)
References
- facts@wolfssl.com (Product)
- facts@wolfssl.com (Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2025-11933?
- CVE-2025-11933 is a medium-severity vulnerability in Apple macOS, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2025-11-21.
- How severe is CVE-2025-11933?
- Medium severity. CVSS v3 base score is 6.5 out of 10.