TI-2026-20069 Aliases CVE-2026-24883 GHSA-7246-cvp4-g68w

NULL pointer dereference in GnuPG

LOW 25CWE-476Published 2026-01-27 · Updated 2026-01-28

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 6 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00486 42nd percentileScored 2026-11-07

Fix Partial GnuPG (GnuPG): 2.5.17Red Hat: 6 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
GnuPG	GnuPG	2.5.3 to before 2.5.17	2.5.17	Patch available	CNA

GnuPG VendorGnuPG Affected 2.5.3 to before 2.5.17 Fixed in 2.5.17 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:gnupg:gnupg:::::-:::*	2.5.13 to before 2.5.17	Vulnerable	GnuPG
cpe:2.3:a:gpg4win:gpg4win::::::::	5.0.0 to before 5.0.1	Vulnerable	Gpg4win

cpe:2.3:a:gnupg:gnupg:*:*:*:*:-:*:*:* Versions 2.5.13 to before 2.5.17 Vulnerable ·GnuPG
cpe:2.3:a:gpg4win:gpg4win:*:*:*:*:*:*:*:* Versions 5.0.0 to before 5.0.1 Vulnerable ·Gpg4win

Remediation

Fix · CNA GnuPG (GnuPG) Fixed in 2.5.17

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-01-27
GnuPG 2.5.17
3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2026-20067 Stack-based buffer overflow in GnuPGPriority MEDIUM 46
- TI-2026-20068 Stack-based buffer overflow in GnuPGPriority LOW 39
Show all 3 records →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)	Affected	—

Not affected: 1 product

Red Hat OpenShift AI (RHOAI)

Timeline

2026-10-02 Threatist record created from CVE-2026-24883
2026-10-03 Alias added: GHSA-7246-cvp4-g68w
2026-11-06 Affected versions changed · Red Hat

References

Patch 1

https://dev.gnupg.org/T8049

Advisory 1

https://www.openwall.com/lists/oss-security/2026/01/27/8

TI-2022-03243 Integer overflow in libksba CVSS 3.1CRITICAL 9.8
TI-2025-42429 Out-of-bounds write in GnuPG CVSS 3.1HIGH 7.8
TI-2025-42428 Improper signature verification in GnuPG CVSS 3.1MEDIUM 5.9
TI-2008-01464 GnuPG (gpg) 1.4.8 and 2.0.8 allows remote attackers to cause a denial of service (crash)… CVSS 2.0HIGH 9.3
TI-2026-20067 Stack-based buffer overflow in GnuPG CVSS 3.1CRITICAL 9.8
TI-2018-08614 mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and… CVSS 3.1HIGH 7.5

See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences