CVE-2026-24883
MEDIUMCVSS 5.5/10EPSS 0.45%
Last modified
CVE-2026-24883 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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).. EPSS estimates a 0.45% chance of exploitation in the next 30 days.
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).
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnupg | Gnupg | >= 2.5.13, < 2.5.17 |
| Gpg4win | Gpg4win | >= 5.0.0, < 5.0.1 |
References
- https://dev.gnupg.org/T8049Patch, Product
- https://www.openwall.com/lists/oss-security/2026/01/27/8Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-24883?
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).
How severe is CVE-2026-24883?
CVE-2026-24883 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.
How do I fix CVE-2026-24883?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-24883?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST