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Fencer Vulns
low 3.7

CVE-2026-24883 json

In GnuPG before 2.5.17, a long signature packet length causes `parse_signature` to return success...

published 2026-01-27 9 mo ago modified 2026-07-25 3 mo ago also EUVD-2026-4770 , GHSA-7246-cvp4-g68w , JLSEC-2026-566

cvss
3.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

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).

Patch / fix

  • julia GnuPG_jll 2.5.17+0
  • GnuPG GnuPG 2.5.17
  • gpg2 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.5.5-160000.4.1

suse advisories SUSE-SU-2026:20179-1SUSE-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

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-2026-24883 updated cvss 3.7

GnuPG: GnuPG: Denial of service due to specially crafted signature packet

  • 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 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 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
none
Automatable
no
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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

Classification

Weakness

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.