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Fencer Vulns
medium 6.7

CVE-2026-16742 json

systemd-homed: local privilege escalation via missing home-record signature verification on the authenticate path

published 2026-08-10 2 mo ago modified 2026-10-23 16 d ago also EUVD-2026-55626

cvss
6.7
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 0%
public exploits
0
none known

Summary

systemd-homed contains a local privilege escalation bug via arbitrary system group addition to a local, logged in, homed-managed user

Patch / fix

  • systemd systemd-homed 262, 261.2, 260.4, 259.8, 258.10
  • systemd Debian 14 261.2-1

debian advisories DEBIAN-CVE-2026-16742

  • systemd Ubuntu 22.04 LTS 249.11-0ubuntu3.22
  • systemd Ubuntu 24.04 LTS 255.4-1ubuntu8.17
  • systemd Ubuntu 26.04 LTS 259.5-0ubuntu3.4

ubuntu advisories UBUNTU-CVE-2026-16742

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

  • systemd SLES 16.0, Linux Micro Extras 6.2, Linux Micro 6.2 +1 more 257.13-160000.4.1

suse advisories SUSE-SU-2026:23470-1SUSE-SU-2026:23620-1SUSE-SU-2026:23454-1

  • systemd openSUSE Leap 16.0 257.13-160000.4.1
  • systemd-mini openSUSE Leap 16.0 257.13-160000.4.1

opensuse advisories openSUSE-SU-2026:21754-1

  • systemd Azure Linux 3.0 255-34

azure linux advisories AZL-95643

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-2026-16742 updated cvss 8.8

systemd: systemd-homed: Local privilege escalation via missing home-record signature verification

  • Red Hat OpenShift Container Platform 4 systemd, systemd-pam, systemd-libs, systemd-oomd, systemd-udev, systemd-tests, +9 more Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 7 systemd, libgudev1, systemd-libs, systemd-sysv, systemd-python, systemd-networkd, +3 more Red Hat Enterprise Linux 8 systemd, systemd-pam, systemd-libs, systemd-udev, systemd-tests, systemd-container, +2 more Red Hat Enterprise Linux 9 systemd, systemd-pam, systemd-libs, systemd-oomd, systemd-udev, systemd-ukify, +7 more Red Hat Enterprise Linux 10 systemd 257-23.el10_2.2 Red Hat Hardened Images systemd 257-23.el10_2.2
    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
total
Assessed
2 mo ago

Exploit prediction

0.06% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

  • systemd systemd-homed

Classification

Weakness
  • CWE-347 Improper Verification of Cryptographic Signature
  • CWE-269 Improper Privilege Management

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.