CVE-2025-11933 — MEDIUM (6.5)

Q: How severe is CVE-2025-11933?

CVE-2025-11933 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2025-11933?

Check the references section above for vendor advisories and patch information. Affected products include: Wolfssl Wolfssl, Apple Macos, Linux Linux Kernel.

Vulnerability 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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Wolfssl	Wolfssl	>= 5.8.2, < 5.8.4
Apple	Macos	-
Linux	Linux Kernel	-

Related Weaknesses (CWE)

CWE-20

References

https://github.com/wolfSSL/wolfsslProduct
https://github.com/wolfSSL/wolfssl/pull/9132Issue TrackingPatch

FAQ

What is CVE-2025-11933?

CVE-2025-11933 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 ...

How severe is CVE-2025-11933?

CVE-2025-11933 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-11933?

Check the references section above for vendor advisories and patch information. Affected products include: Wolfssl Wolfssl, Apple Macos, Linux Linux Kernel.