HOMEVULNERABILITIESCVE-2026-41989
MEDIUM

CVE-2026-41989

CWE-787Published: April 23, 2026· Updated: Apr 27, 2026

6.7
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:1.7th

Official Description

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

NVD Source

Technical Analysis

CVE-2026-41989 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.7.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Vendors & Products

gnupg1 product
libgcrypt
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

ADVISORYhttps://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.html
ADVISORYhttps://www.openwall.com/lists/oss-security/2026/04/21/1

All References (3)

→
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

Quick Facts

CVE IDCVE-2026-41989
CVSS Score6.7 / 10
SeverityMEDIUM
WeaknessCWE-787
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedApr 23, 2026

Related CVEs (CWE-787)

CVE-2026-42369
10.0
CVE-2026-4746
10.0
CVE-2019-25628
9.8
CVE-2026-40393
9.8
CVE-2018-25223
9.8
CVE-2026-41157
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-41989 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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CVE-2026-41989 — CVSS 6.7 MEDIUM | CTIWATCH.COM