Medium severity · published Jan 27, 2026
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…
5.5
CVSS
0.5%
EPSS
No
On KEV
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).
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GN
GnuPG · GnuPG
2.5.3 before 2.5.17 · source: vendor, NVD
GP
Gpg4win · Gpg4win
5.0.0 before 5.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24883
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-24883
Patch
https://dev.gnupg.org/T8049
Mailing List
https://www.openwall.com/lists/oss-security/2026/01/27/8
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