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TI-2025-42428 Aliases CVE-2025-68972GHSA-w789-3q45-984r

Improper signature verification in GnuPG

Priority MEDIUM 60CWE-347Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 1 fixed, 6 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-347.

Summary

In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds (although an "invalid armor" message is printed during verification). This is related to use of \f as a marker to denote truncation of a long plaintext line.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00113 1st percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 6 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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

VendorProductAffected versionsFixed inStatusSource
GnuPGGnuPGup to 2.4.8—No fix listedCNA
  • GnuPG VendorGnuPG Affected up to 2.4.8 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gnupg:gnupg:*:*:*:*:-:*:*:*up to 2.4.8VulnerableGnuPG
  • cpe:2.3:a:gnupg:gnupg:*:*:*:*:-:*:*:* Versions up to 2.4.8 Vulnerable ·GnuPG

Remediation

Red Hat 1 advisory

  • RHSA-2026:7458 Released 2026-04-10 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images gnupg2-2.4.9-5.1.hum1@aarch64, gnupg2-2.4.9-5.1.hum1@src, gnupg2-2.4.9-5.1.hum1@x86_64 +20

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)Affected—
Red Hat Hardened ImagesFixed RHSA-2026:7458
Not affected: 1 product
  • Red Hat OpenShift AI (RHOAI)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-68972
  2. 2026-10-03 Alias added: GHSA-w789-3q45-984r
  3. 2026-11-06 Affected versions changed · Red Hat

References

Other 3

  • 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-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
  • TI-2010-02445 Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16… CVSS 3.1HIGH 8.1
See all 34 →

Sources

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