RHSA-2026:57600: Important: mrtg security update
The Multi Router Traffic Grapher (MRTG) monitors the traffic load on network connections. MRTG generates HTML pages containing PNG images which provide a live visual representation of this traffic.Security Fix(es): mrtg: MRTG daemon symlink-following chown allows local privilege escalation via PID file path manipulation (CVE-2026-72694) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/mrtgto a version that resolves this vulnerability.Fixed in 2.17.7-12.el9_8.1 - Upgrade
Upgrade
redhat/mrtg-debuginfoto a version that resolves this vulnerability.Fixed in 2.17.7-12.el9_8.1 - Upgrade
Upgrade
redhat/mrtg-debugsourceto a version that resolves this vulnerability.Fixed in 2.17.7-12.el9_8.1 - Upgrade
Upgrade
redhat/mrtgto a version that resolves this vulnerability.Fixed in 2.17.7-12.el9_8.1.aa - Upgrade
Upgrade
redhat/mrtg-debuginfoto a version that resolves this vulnerability.Fixed in 2.17.7-12.el9_8.1.aa - Upgrade
Upgrade
redhat/mrtg-debugsourceto a version that resolves this vulnerability.Fixed in 2.17.7-12.el9_8.1.aa
Event History
Frequently Asked Questions
Who could exploit this issue?
A local attacker could exploit it to escalate privileges by manipulating the MRTG daemon's PID file path.
What component is involved in the vulnerability?
The issue affects the MRTG daemon's handling of ownership changes when following symlinks associated with the PID file path.
Which Red Hat packages are included in this update?
The advisory lists redhat/mrtg, redhat/mrtg-debuginfo, and redhat/mrtg-debugsource.