CVE-2025-9820

MEDIUM EPSS 10.3%
Published Jan 26, 20265mo ago · Modified Jun 17, 20261w ago
4.0 CVSS 3.1
Medium
Find Similar
Published Jan 26, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

Description

A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error can cause the application using GnuTLS to crash or, in certain conditions, be exploited for code execution. As a result, systems or applications relying on GnuTLS may be vulnerable to a denial of service or local privilege escalation attacks.

CVSS Details

Base Score
4.0
Exploitability
2.5
Impact
1.4
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
10.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-121

References 16

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.