CVE-2026-41990
Buffer Overflow in Libgcrypt Dilithium Signing (Pre
Publication date: 2026-04-23
Last updated on: 2026-04-27
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| gnupg | libgcrypt | From 1.12.0 (inc) to 1.12.2 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.