CVE-2026-41990 — MEDIUM (4.0)

Q: What is CVE-2026-41990?

CVE-2026-41990 is a vulnerability with a CVSS score of 4.0 (MEDIUM). Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.

Q: How severe is CVE-2026-41990?

CVE-2026-41990 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-41990?

Check the references section above for vendor advisories and patch information. Affected products include: Gnupg Libgcrypt.

Vulnerability Description

Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.

CVSS Score

4.0

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Gnupg	Libgcrypt	>= 1.12.0, < 1.12.2

Related Weaknesses (CWE)

CWE-787

References

https://dev.gnupg.org/T8208Broken Link
https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.htmlMailing ListRelease Notes
https://www.openwall.com/lists/oss-security/2026/04/21/1Mailing ListRelease Notes

FAQ

What is CVE-2026-41990?

CVE-2026-41990 is a vulnerability with a CVSS score of 4.0 (MEDIUM). Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.

How severe is CVE-2026-41990?

CVE-2026-41990 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-41990?

Check the references section above for vendor advisories and patch information. Affected products include: Gnupg Libgcrypt.