🛡️ CVE-2025-9820
🟡 CVSS 4.0 — Medium ✅ No Known Exploit CWE-121 NVD
4.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 4.0
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-121
Public Exploit ✅ No
Source NVD
Published 2026-01-26
Updated 2026-06-02
Modified 2026-05-12
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

References

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