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Fencer Vulns
medium 5.9

CVE-2025-68972 json

In GnuPG through 2.4.8, if a signed message has `\f` at the end of a plaintext line, an adversary...

published 2025-12-27 10 mo ago modified 2026-10-13 27 d ago also EUVD-2025-205487 , GHSA-w789-3q45-984r , JLSEC-2026-562

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

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.

Patch / fix

  • julia GnuPG_jll 2.5.16+0
  • gnupg2 hummingbird 1 2.4.9-5.1.hum1
  • gnupg2-g13 hummingbird 1 2.4.9-5.1.hum1
  • gnupg2-wks hummingbird 1 2.4.9-5.1.hum1
  • gnupg2-smime hummingbird 1 2.4.9-5.1.hum1
  • gnupg2-utils hummingbird 1 2.4.9-5.1.hum1
  • gnupg2-verify hummingbird 1 2.4.9-5.1.hum1
  • gnupg2-dirmngr hummingbird 1 2.4.9-5.1.hum1
  • gnupg2-gpgconf hummingbird 1 2.4.9-5.1.hum1

red hat advisories RHSA-2026:7458

  • gnupg Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 2.4.9-r0

alpine advisories ALPINE-CVE-2025-68972

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gnupg2 Azure Linux 3.0 2.4.9-1

azure linux advisories AZL-73192

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-68972 updated cvss 5.9

gnupg: GnuPG: Signature bypass via form feed character in signed messages

  • Red Hat Enterprise Linux 6 gnupg2, gnupg2-smime
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 gnupg2, gnupg2-smime Red Hat Enterprise Linux 8 gnupg2, gnupg2-smime Red Hat Enterprise Linux 9 gnupg2, gnupg2-smime Red Hat Enterprise Linux 10 gnupg2
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-core-bff-rhel9, rhoai/odh-dashboard-rhel9, rhoai/odh-mod-arch-maas-rhel9, rhoai/odh-mod-arch-automl-rhel9, rhoai/odh-mod-arch-gen-ai-rhel9, rhoai/odh-mod-arch-mlflow-rhel9, +6 more
    under investigation
  • Red Hat Hardened Images gnupg2 2.4.9-5.1.hum1, gnupg2-g13 2.4.9-5.1.hum1, gnupg2-wks 2.4.9-5.1.hum1, gnupg2-smime 2.4.9-5.1.hum1, gnupg2-utils 2.4.9-5.1.hum1, gnupg2-verify 2.4.9-5.1.hum1, +5 more
    fixed: vendor fix RHSA-2026:7458
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-mlflow-rhel9, rhoai/odh-kube-rbac-proxy-rhel9, rhoai/odh-maas-controller-rhel9, rhoai/odh-mlflow-operator-rhel9, rhoai/odh-model-controller-rhel9, rhoai/odh-ogx-k8s-operator-rhel9, +14 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
10 mo ago

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gpg.fail https://gpg.fail/formfeed referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
NVD 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
OSV 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
julia GnuPG_jll
<2.5.16+0
2.5.16+0

Affected products

  • GnuPG GnuPG

Classification

Weakness
  • CWE-347 Improper Verification of Cryptographic Signature

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.