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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (8.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Gnupg Libgcrypt — versions 1.8.8, 1.11.0, 1.12.0
Weakness classification (CWE)
References
- lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.html (Third Party Advisory)
- dev.gnupg.org/T8211 (Broken Link)
- www.openwall.com/lists/oss-security/2026/04/21/1 (Third Party Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
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.