CVE-2026-24883
Low
Description
In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (application crash).
SeverityLow
CVSS3.7
Exploit probability—
ProductGnupg
PublishedJan 27, 2026
First seenJan 27, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- gnupg gnupg2.5.17 or later
- gpg4win gpg4win5.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnupg gnupg | 2.5.13 ≤ v < 2.5.17 | 2.5.17 |
| gpg4win gpg4win | 5.0.0 ≤ v < 5.0.1 | 5.0.1 |
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