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THREAT OPSThreat News › [NVD] CVE-2025-9820 (MEDIUM 4.0) — 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 c

[NVD] CVE-2025-9820 (MEDIUM 4.0) — 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 c

lownvdPublished 2026-01-26

CVE-2025-9820 CVSS: 4.0 MEDIUM Published: 2026-01-26T20:16:09.370

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

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2025-9820