CVE-2021-3345

—

CVSS 3.1

7.8 high

EPSS

1%p63

Published

Jan 29, 2021 (Jan 29, 2021)

Modified

Jun 17, 2026

Description

_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.

Vendors: gnupg oracle
Products: libgcrypt, communications billing and revenue management
Weakness: CWE-787
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.1%)

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