CVE-2026-41990
Received Received - Intake
Buffer Overflow in Libgcrypt Dilithium Signing (Pre

Publication date: 2026-04-23

Last updated on: 2026-04-27

Assigner: MITRE

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 Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-04-23
Last Modified
2026-04-27
Generated
2026-06-16
AI Q&A
2026-04-24
EPSS Evaluated
2026-06-15
NVD
CVE-2026-41990
EUVD
EUVD-2026-25193
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
gnupg libgcrypt From 1.12.0 (inc) to 1.12.2 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability exists in Libgcrypt versions before 1.12.2 and involves improper handling of Dilithium signing. Specifically, the software writes to a static array without performing bounds checking. However, these writes do not involve attacker-controlled data.

Impact Analysis

The vulnerability has a CVSS base score of 4.0, indicating a low to moderate severity. It requires local access with high attack complexity and no privileges or user interaction. While it does not compromise confidentiality, it can impact integrity and availability to some extent. Since the writes do not use attacker-controlled data, the risk of exploitation is limited.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-41990. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart