PT-2025-47810 · Wolfssl+1 · Wolfssl+1

Published 2025-11-21 · Updated 2025-12-16 · CVE-2025-11933

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions wolfSSL versions 5.8.2 and earlier

Description A flaw exists in the processing of TLS 1.3 CKS extensions within wolfSSL. This improper input validation can be triggered by a specially crafted ClientHello message containing duplicate CKS extensions. A remote, unauthenticated attacker could potentially exploit this to cause a denial-of-service condition.

Recommendations Update wolfSSL to a version later than 5.8.2.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2025-11933

Affected Products

Debian

Wolfssl

References · 13

• https://github.com/wolfSSL/wolfssl/pull/9132 · Patch
• https://osv.dev/vulnerability/CVE-2025-11933 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-11933 · Security Note
• https://ubuntu.com/security/CVE-2025-11933 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-11933 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-11933 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-11933 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-11933 · Vendor Advisory
• https://github.com/wolfSSL/wolfssl · Note
• https://t.me/msrcreports/2590 · Telegram Post
• https://t.me/CVEtracker/37988 · Telegram Post
• https://t.me/msrcreports/2522 · Telegram Post
• https://twitter.com/CVEnew/status/1991999021267996698 · Twitter Post