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Fencer Vulns
high 8.4

CVE-2026-24882 json

In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the...

published 2026-01-27 9 mo ago modified 2026-07-18 3 mo ago also EUVD-2026-4769 , GHSA-mpc3-hqr8-w5f3 , JLSEC-2026-565

cvss
8.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the PKDECRYPT command for TPM-backed RSA and ECC keys.

Patch / fix

  • julia GnuPG_jll 2.5.17+0
  • GnuPG GnuPG 2.5.17
  • Red Hat Red Hat Enterprise Linux 10 0:2.4.5-4.el10_1
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:2.4.5-2.el10_0.2
  • gnupg2 Debian 14 2.4.9-4

debian advisories DEBIAN-CVE-2026-24882

  • gnupg2 RHEL 10.1 2.4.5-4.el10_1
  • gnupg2-smime RHEL 10.1 2.4.5-4.el10_1
  • gnupg2 enterprise linux eus 10.0 2.4.5-2.el10_0.2
  • gnupg2-smime enterprise linux eus 10.0 2.4.5-2.el10_0.2

red hat advisories RHSA-2026:2753RHSA-2026:2719

  • gpg2 Linux Micro 6.1 2.4.4-slfo.1.1_7.1
  • gpg2 Linux Micro 6.0 2.4.4-7.1
  • gpg2 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 +1 more 2.4.4-150600.3.15.1
  • gpg2 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.5.5-160000.4.1

suse advisories SUSE-SU-2026:20487-1SUSE-SU-2026:20444-1SUSE-SU-2026:0434-1SUSE-SU-2026:20179-1SUSE-SU-2026:20195-1

  • gpg2 openSUSE Leap 16.0 2.5.5-160000.4.1
  • gpg2 openSUSE Tumbleweed 2.5.17-1.1

opensuse advisories openSUSE-SU-2026:20136-1openSUSE-SU-2026:10112-1

  • gnupg2 AlmaLinux 10 2.4.5-4.el10_1
  • gnupg2-smime AlmaLinux 10 2.4.5-4.el10_1

almalinux advisories ALSA-2026:2719

  • gnupg2 Rocky Linux 10 2.4.5-4.el10_1

rocky linux advisories RLSA-2026:2719

  • gnupg2 Azure Linux 3.0 2.4.9-2
  • gnupg2 CBL-Mariner 2.0 2.4.0-3

azure linux advisories AZL-75266AZL-76146

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-2026-24882 updated cvss 8.4

GnuPG: GnuPG: Stack-based buffer overflow in tpm2daemon allows arbitrary code execution

  • Red Hat Enterprise Linux AppStream (v. 10) gnupg2-smime 2.4.5-4.el10_1
    fixed: vendor fix RHSA-2026:2719
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) gnupg2-smime 2.4.5-2.el10_0.2
    fixed: vendor fix RHSA-2026:2753
  • Red Hat Enterprise Linux BaseOS (v. 10) gnupg2 2.4.5-4.el10_1
    fixed: vendor fix RHSA-2026:2719
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) gnupg2 2.4.5-2.el10_0.2
    fixed: vendor fix RHSA-2026:2753
  • Red Hat Enterprise Linux 6 gnupg2, gnupg2-smime Red Hat Enterprise Linux 7 gnupg2, gnupg2-smime Red Hat Enterprise Linux 8 gnupg2, gnupg2-smime Red Hat Enterprise Linux 9 gnupg2, gnupg2-smime
    not affected: vulnerable code not in execute path

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
none
Automatable
no
Technical impact
total
Assessed
9 mo ago

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • dev.gnupg.org https://dev.gnupg.org/T8045 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADP 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 7.8 CVSS:3.1/AV:L/AC:L/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, <2.5.17+0
2.5.17+0

Affected products

  • GnuPG GnuPG
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow

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.