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Fencer Vulns
high 7.8

CVE-2025-68973 json

In GnuPG through 2.4.8, `armor_filter` in g10/armor.c has two increments of an index variable where...

published 2025-12-28 10 mo ago modified 2026-10-13 27 d ago also EUVD-2025-205519 , GHSA-pj23-86ww-f72p , JLSEC-2026-563

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)

Patch / fix

  • julia GnuPG_jll 2.5.16+0
  • GnuPG GnuPG 2.2.51, 2.4.9
  • gnupg2 Debian 12 2.2.40-1.1+deb12u2
  • gnupg2 Debian 13 2.4.7-21+deb13u1
  • gnupg2 Debian 14 2.4.8-5

debian advisories DEBIAN-CVE-2025-68973

  • gnupg2 Ubuntu 22.04 LTS 2.2.27-3ubuntu2.5
  • gnupg2 Ubuntu 24.04 LTS 2.4.4-2ubuntu17.4
  • gnupg2 Ubuntu 25.10 2.4.8-2ubuntu2.1
  • gnupg Ubuntu Pro 14.04 LTS 1.4.16-1ubuntu2.6+esm2
  • gnupg Ubuntu Pro 16.04 LTS 1.4.20-1ubuntu3.3+esm3
  • gnupg2 Ubuntu Pro 16.04 LTS 2.1.11-6ubuntu2.1+esm3
  • gnupg2 Ubuntu Pro 18.04 LTS 2.2.4-1ubuntu1.6+esm2
  • gnupg2 Ubuntu Pro 20.04 LTS 2.2.19-3ubuntu2.5+esm1

ubuntu advisories UBUNTU-CVE-2025-68973

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gnupg2 RHEL 9 2.3.3-5.el9_7
  • gnupg2-smime RHEL 9 2.3.3-5.el9_7
  • gnupg2 RHEL 8 2.2.20-4.el8_10
  • gnupg2-smime RHEL 8 2.2.20-4.el8_10
  • gnupg2 RHEL 10.1 2.4.5-3.el10_1
  • gnupg2-smime RHEL 10.1 2.4.5-3.el10_1
  • gnupg2 RHEL 9.0 E4S 2.3.3-2.el9_0.1
  • gnupg2-smime RHEL 9.0 E4S 2.3.3-2.el9_0.1

red hat advisories RHSA-2026:1719RHSA-2026:1705RHSA-2026:1677RHSA-2026:1629RHSA-2026:1468RHSA-2026:1229

  • gpg2 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 +1 more 2.4.4-150600.3.12.1
  • gpg2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +9 more 2.2.27-150300.3.16.1
  • gpg2 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.5.5-160000.3.1
  • gpg2 Linux Micro 6.0 2.4.4-6.1
  • gpg2 Linux Micro 6.1 2.4.4-slfo.1.1_6.1
  • gpg2 SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2.0.24-9.17.1

suse advisories SUSE-SU-2026:0378-1SUSE-SU-2026:0215-1SUSE-SU-2026:0214-1SUSE-SU-2026:20080-1SUSE-SU-2026:20108-1SUSE-SU-2026:20243-1

  • gpg2 openSUSE Leap 16.0 2.5.5-160000.3.1
  • gpg2 openSUSE Tumbleweed 2.5.16-1.1

opensuse advisories openSUSE-SU-2026:20029-1openSUSE-SU-2026:10001-1

  • gnupg2 AlmaLinux 10 2.4.5-3.el10_1
  • gnupg2-smime AlmaLinux 10 2.4.5-3.el10_1
  • gnupg2 AlmaLinux 9 2.3.3-5.el9_7
  • gnupg2-smime AlmaLinux 9 2.3.3-5.el9_7
  • gnupg2 AlmaLinux 8 2.2.20-4.el8_10
  • gnupg2-smime AlmaLinux 8 2.2.20-4.el8_10

almalinux advisories ALSA-2026:0697ALSA-2026:0719ALSA-2026:0728

  • gnupg2 Rocky Linux 9 2.3.3-5.el9_7
  • gnupg2 Rocky Linux 10 2.4.5-3.el10_1
  • gnupg2 Rocky Linux 8 2.2.20-4.el8_10

rocky linux advisories RLSA-2026:0719RLSA-2026:0697RLSA-2026:0728

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

alpine advisories ALPINE-CVE-2025-68973

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
  • gnupg2 CBL-Mariner 2.0 2.4.0-3

azure linux advisories AZL-73204AZL-73367

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-2025-68973 updated cvss 7.8

GnuPG: GnuPG: Information disclosure and potential arbitrary code execution via out-of-bounds write

  • Red Hat Enterprise Linux 6 gnupg2, gnupg2-smime
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Compliance Operator 1 compliance 1769190317, compliance 1769458916, compliance 1769458927, compliance 1769483309
    fixed: vendor fix RHSA-2026:1859
  • Red Hat Advanced Cluster Security 4.8 advanced-cluster-security 1769010086, advanced-cluster-security 1769125501, advanced-cluster-security 1769615659
    fixed: vendor fix RHSA-2026:1517
  • Red Hat Advanced Cluster Security 4.9 advanced-cluster-security 1769065259, advanced-cluster-security 1769100379, advanced-cluster-security 1769492398, advanced-cluster-security 1769577723, advanced-cluster-security 1770074713, advanced-cluster-security 1770250889
    fixed: vendor fix RHSA-2026:2350
  • Red Hat Ceph Storage 7 rhceph 1769508455
    fixed: vendor fix RHSA-2026:1858
  • Red Hat Ceph Storage 8 rhceph 1769512383
    fixed: vendor fix RHSA-2026:1652
  • Red Hat Discovery 2 discovery 1769104765, discovery 1769111774
    fixed: vendor fix RHSA-2026:1736
  • Red Hat Enterprise Linux AppStream (v. 9) gnupg2-smime 2.3.3-5.el9_7
    fixed: vendor fix RHSA-2026:0719
show 25 more
  • Red Hat Enterprise Linux AppStream (v. 10) gnupg2-smime 2.4.5-3.el10_1
    fixed: vendor fix RHSA-2026:0697
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) gnupg2-smime 2.3.3-2.el9_0.1
    fixed: vendor fix RHSA-2026:1719
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) gnupg2-smime 2.3.3-2.el9_2.1
    fixed: vendor fix RHSA-2026:1705
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) gnupg2-smime 2.4.5-2.el10_0.1
    fixed: vendor fix RHSA-2026:1629
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) gnupg2-smime 2.3.3-4.el9_4.1
    fixed: vendor fix RHSA-2026:1230
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) gnupg2-smime 2.3.3-4.el9_6.1
    fixed: vendor fix RHSA-2026:1229
  • Red Hat Enterprise Linux BaseOS (v. 8) gnupg2 2.2.20-4.el8_10, gnupg2-smime 2.2.20-4.el8_10
    fixed: vendor fix RHSA-2026:0728
  • Red Hat Enterprise Linux BaseOS (v. 9) gnupg2 2.3.3-5.el9_7
    fixed: vendor fix RHSA-2026:0719
  • Red Hat Enterprise Linux BaseOS (v. 10) gnupg2 2.4.5-3.el10_1
    fixed: vendor fix RHSA-2026:0697
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) gnupg2 2.2.9-1.el8_2.1, gnupg2-smime 2.2.9-1.el8_2.1
    fixed: vendor fix RHSA-2026:1468
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) gnupg2 2.2.20-2.el8_4.1, gnupg2-smime 2.2.20-2.el8_4.1
    fixed: vendor fix RHSA-2026:1014
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) gnupg2 2.2.20-3.el8_6.1, gnupg2-smime 2.2.20-3.el8_6.1 Red Hat Enterprise Linux BaseOS E4S (v.8.6) gnupg2 2.2.20-3.el8_6.1, gnupg2-smime 2.2.20-3.el8_6.1
    fixed: vendor fix RHSA-2026:0974
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) gnupg2 2.2.20-3.el8_8.1, gnupg2-smime 2.2.20-3.el8_8.1
    fixed: vendor fix RHSA-2026:0935
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) gnupg2 2.3.3-2.el9_0.1
    fixed: vendor fix RHSA-2026:1719
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) gnupg2 2.3.3-2.el9_2.1
    fixed: vendor fix RHSA-2026:1705
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) gnupg2 2.4.5-2.el10_0.1
    fixed: vendor fix RHSA-2026:1629
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) gnupg2 2.3.3-4.el9_4.1
    fixed: vendor fix RHSA-2026:1230
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) gnupg2 2.3.3-4.el9_6.1
    fixed: vendor fix RHSA-2026:1229
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) gnupg2 2.2.20-2.el8_4.1, gnupg2-smime 2.2.20-2.el8_4.1
    fixed: vendor fix RHSA-2026:1014
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) gnupg2 2.2.20-3.el8_6.1, gnupg2-smime 2.2.20-3.el8_6.1
    fixed: vendor fix RHSA-2026:0974
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) gnupg2 2.2.20-3.el8_8.1, gnupg2-smime 2.2.20-3.el8_8.1
    fixed: vendor fix RHSA-2026:0935
  • Red Hat Enterprise Linux Server (v. 7 ELS) gnupg2 2.0.22-5.el7_9.1 Red Hat Enterprise Linux Server Optional (v. 7 ELS) gnupg2-smime 2.0.22-5.el7_9.1
    fixed: vendor fix RHSA-2026:1677
  • Red Hat Insights proxy 1.5 insights-proxy 1770740405
    fixed: vendor fix RHSA-2026:2485
  • Red Hat Update Infrastructure 5 rhui5 1770646925, rhui5 1770807477, rhui5 1770808689, rhui5 1770808765
    fixed: vendor fix RHSA-2026:2563
  • Red Hat Compliance Operator 1 compliance 1769512879 Red Hat Advanced Cluster Security 4.8 advanced-cluster-security 1769125501, advanced-cluster-security 1769615659 Red Hat Advanced Cluster Security 4.9 advanced-cluster-security 1769492398, advanced-cluster-security 1769577723, advanced-cluster-security 1770074713, advanced-cluster-security 1770250889 Red Hat Ceph Storage 7 rhceph 1769511650, rhceph 1769512818, rhceph 1769513068, rhceph 1769514555, rhceph 1769523636 Red Hat Ceph Storage 8 rhceph 1768902743, rhceph 1768903190, rhceph 1768903749, rhceph 1768907469, rhceph 1768915405 Red Hat Enterprise Linux AppStream EUS (v.9.4) gnupg2-debuginfo 2.3.3-4.el9_4.1, gnupg2-debugsource 2.3.3-4.el9_4.1, gnupg2-smime-debuginfo 2.3.3-4.el9_4.1
    not affected: vulnerable code not present

12 more not affected in the full advisory

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
total
Assessed
6 mo ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

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

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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-675 Multiple Operations on Resource in Single-Operation Context
  • CWE-787 Out-of-bounds Write

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.