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.
History

Mon, 24 Nov 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 24 Nov 2025 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Wolfssl
Wolfssl wolfssl
Vendors & Products Wolfssl
Wolfssl wolfssl

Fri, 21 Nov 2025 22:30:00 +0000

Type Values Removed Values Added
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.
Title DoS Vulnerability in wolfSSL TLS 1.3 CKS Extension
Weaknesses CWE-20
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: wolfSSL

Published: 2025-11-21T22:19:08.654Z

Updated: 2025-11-24T17:59:45.393Z

Reserved: 2025-10-17T22:15:26.318Z

Link: CVE-2025-11933

cve-icon Vulnrichment

Updated: 2025-11-24T16:21:12.511Z

cve-icon NVD

Status : Received

Published: 2025-11-21T23:15:44.293

Modified: 2025-11-21T23:15:44.293

Link: CVE-2025-11933

cve-icon Redhat

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