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Fencer Vulns
low 2.9

CVE-2026-57062 json

CMS (Cryptographic Message Syntax) parsing in gpgsm in GnuPG through 2.5.20 mishandles the CMS...

published 2026-06-23 4 mo ago modified 2026-07-31 3 mo ago also EUVD-2026-38550 , GHSA-m6x2-4hhh-669j , JLSEC-2026-1084

cvss
2.9
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 3%
public exploits
0
none known

Summary

CMS (Cryptographic Message Syntax) parsing in gpgsm in GnuPG through 2.5.20 mishandles the CMS format for AES-GCM because aes-ICVlen is supposed to be 12 bytes but 4 bytes is accepted. NOTE: this is related to CVE-2026-34182.

Patch / fix

  • julia GnuPG_jll 2.5.21+0
  • gnupg2 Debian 14 2.4.9-5

debian advisories DEBIAN-CVE-2026-57062

  • gnupg2 Ubuntu 24.04 LTS 2.4.4-2ubuntu17.6
  • gnupg2 Ubuntu 26.04 LTS 2.4.8-4ubuntu3.1

ubuntu advisories UBUNTU-CVE-2026-57062

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 hummingbird 1 2.4.9-18.3.hum1
  • gnupg2-g13 hummingbird 1 2.4.9-18.3.hum1
  • gnupg2-wks hummingbird 1 2.4.9-18.3.hum1
  • gnupg2-smime hummingbird 1 2.4.9-18.3.hum1
  • gnupg2-utils hummingbird 1 2.4.9-18.3.hum1
  • gnupg2-verify hummingbird 1 2.4.9-18.3.hum1
  • gnupg2-dirmngr hummingbird 1 2.4.9-18.3.hum1
  • gnupg2-gpgconf hummingbird 1 2.4.9-18.3.hum1

red hat advisories RHSA-2026:82418

  • gpg2 Linux Micro 6.0 2.4.4-9.1
  • gpg2 SLE Module for Basesystem 15 SP7 2.4.4-150600.3.18.1
  • gpg2 Linux Micro 6.1 2.4.4-slfo.1.1_9.1
  • gpg2 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.5.5-160000.6.1

suse advisories SUSE-SU-2026:23007-1SUSE-SU-2026:3243-1SUSE-SU-2026:22923-1SUSE-SU-2026:22757-1SUSE-SU-2026:22825-1

  • gpg2 openSUSE Leap 16.0 2.5.5-160000.6.1
  • gpg2 openSUSE Tumbleweed 2.5.21-1.1

opensuse advisories openSUSE-SU-2026:21385-1openSUSE-SU-2026:11213-1

  • gnupg2 Azure Linux 3.0 2.4.9-3

azure linux advisories AZL-91170

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-2026-57062 updated cvss 2.9

GnuPG: Incorrect cryptographic message parsing

  • Red Hat Enterprise Linux 6 gnupg2, gnupg2-smime Red Hat Enterprise Linux 7 gnupg2, gnupg2-smime
    affected: workaround, no fix planned “Out of support scope”
  • 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 2.4.9-18.3.hum1, gnupg2-g13 2.4.9-18.3.hum1, gnupg2-wks 2.4.9-18.3.hum1, gnupg2-smime 2.4.9-18.3.hum1, gnupg2-utils 2.4.9-18.3.hum1, gnupg2-verify 2.4.9-18.3.hum1, +5 more
    fixed: vendor fix RHSA-2026:82418
  • 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
4 mo ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
OSV 3.1 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
julia GnuPG_jll
<2.5.21+0
2.5.21+0

Affected products

  • GnuPG GnuPG

Classification

Weakness
  • CWE-1284 Improper Validation of Specified Quantity in Input

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.