RHSA-2026:87255HighCVSS 7.1

Red Hat Security Advisory: mrtg security update

Published
October 21, 2026
Last Modified
October 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-72694 →

📋 Description

CVE-2026-72694 — mrtg: MRTG daemon symlink-following chown allows local privilege escalation via PID file path manipulation

🎯 Affected products15

  • Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-0:2.17.10-11.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-0:2.17.10-11.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-0:2.17.10-11.el10_0.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-0:2.17.10-11.el10_0.1.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-0:2.17.10-11.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-debuginfo-0:2.17.10-11.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-debuginfo-0:2.17.10-11.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-debuginfo-0:2.17.10-11.el10_0.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-debuginfo-0:2.17.10-11.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-debugsource-0:2.17.10-11.el10_0.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-debugsource-0:2.17.10-11.el10_0.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-debugsource-0:2.17.10-11.el10_0.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-debugsource-0:2.17.10-11.el10_0.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • mrtg-selinux-0:2.17.10-11.el10_0.1.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this issue, avoid starting the MRTG daemon as root with the `--daemon` option. Instead, configure MRTG to run directly as an unprivileged user. If root startup is strictly necessary, ensure that the PID file and its directory are owned by root and are not writable by unprivileged users, and prevent untrusted users from influencing the `--pid-file` path. Changes to service configuration may require a service restart to take effect.

🔗 References (4)