Buffer overflow in Gnupg Libgcrypt

CVE-2026-41989

Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.

Vulnerability class: Buffer Overflow

EPSS: 0.000 (0.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Gnupg Libgcrypt — versions 1.8.8, 1.11.0, 1.12.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

Frequently asked questions

What is CVE-2026-41989?: CVE-2026-41989 is a medium-severity vulnerability in Gnupg Libgcrypt, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2026-04-23.
How severe is CVE-2026-41989?: Medium severity. CVSS v3 base score is 6.7 out of 10.