Home/CVE/Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext
CVE

CVE-2026-41989

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

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

MEDIUM · CVSS 6.7 EPSS 7e-05
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

3
gnupg libgcrypt>= 1.8.8 and < 1.10.4
gnupg libgcrypt>= 1.11.0 and < 1.11.3
gnupg libgcrypt>= 1.12.0 and < 1.12.2
▣

Scoring & Timeline

6.7
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Apr 2026 · 05:16 AM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

3
usnUSN-8319-1
msrcCVE-2026-41989
rhsaRHSA-2026:8466Low
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://dev.gnupg.org/T8211Broken Link
https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.htmlThird Party Advisory
https://www.openwall.com/lists/oss-security/2026/04/21/1Third Party Advisory
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