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.

Published: 2026-04-23 Last update: 2026-04-27 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-41989 is rated Low Risk (29.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.18%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-41989

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.01% 0.18% +0.17%
2 2026-04-23 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-41989

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.7 3.1 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.4 5.2 [email protected]

Weakness enumeration for CVE-2026-41989

GitHub Security Advisory for CVE-2026-41989

GHSA-wrv8-79m2-qg24 · Severity: medium — Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via...

OS Trackers for CVE-2026-41989

vendor priority summary link
debian unimportant CVE-2026-41989 unimportant priority: Debian including 1 source packages (libgcrypt20), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2026-41989
redhat medium — https://access.redhat.com/security/cve/CVE-2026-41989
suse medium — https://www.suse.com/security/cve/CVE-2026-41989/
ubuntu medium CVE-2026-41989 medium priority: Ubuntu including 1 source packages (libgcrypt20), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, resolute, upstream, xenial): needs-triage 7, released 1. https://ubuntu.com/security/CVE-2026-41989

Affected software / configurations for CVE-2026-41989

Vendor Product Version Raw CPE
gnupg libgcrypt >= 1.8.8, < 1.10.4 cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*
gnupg libgcrypt >= 1.11.0, < 1.11.3 cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*
gnupg libgcrypt >= 1.12.0, < 1.12.2 cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*

References for CVE-2026-41989

cvelogic Threat Intelligence