CVE-2026-24883

Gpg4win: NULL Pointer Dereference

CVE-2026-24883 is fixed in 2 products on 2 platforms, first by Gpg4win 5.0.1, released January 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.

RoutineFixed on 2 platforms

CVSS

5.5

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0049

42nd percentile

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).

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Gpg4win	5.0.1	Gpg4win 5.0.1	Jan 27, 2026
Linux
gpg2 · opensuse-leap 16.0	2.5.5-160000.4.1	OPENSUSE-SU-2026:20136-1	Jan 29, 2026
gpg2 · sles 16.0	2.5.5-160000.4.1	SUSE-SU-2026:20195-1	Jan 29, 2026

Details

Published
January 27, 2026
Weakness
CWE-476: NULL Pointer Dereference
Vendor advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-24883

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