CVE-2026-72694
Fixed in a distro release EPSS <1%CVSS 7.1
A flaw was found in MRTG. When the MRTG daemon is started as a root user and subsequently drops privileges, a local, low-privileged attacker can exploit a symbolic link (symlink) following vulnerability. By influencing or pre-placing a symlink in the process ID (PID) file path, the attacker can trick the root process into changing the ownership of an arbitrary existing file to the daemon user. This can lead to local privilege escalation, allowing unauthorized access to or modification of sensitive files.
Products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | mrtg | 2.17.10-12.el10_2.1 |
| AlmaLinux 10 | mrtg-selinux | 2.17.10-12.el10_2.1 |
| AlmaLinux 8 | mrtg | 2.17.7-1.el8_10.1 |
| AlmaLinux 9 | mrtg | 2.17.7-12.el9_8.1 |
| Debian 12 | mrtg | no fix |
| Debian 13 | mrtg | 2.17.10-13+deb13u2 |
| Debian 14 | mrtg | 2.17.10-15 |
| Red Hat Enterprise Linux 10.2 | mrtg | 0:2.17.10-12.el10_2.1 |
| Red Hat Enterprise Linux 10.2 | mrtg-debuginfo | 0:2.17.10-12.el10_2.1 |
| Red Hat Enterprise Linux 10.2 | mrtg-debugsource | 0:2.17.10-12.el10_2.1 |
| Red Hat Enterprise Linux 10.2 | mrtg-selinux | 0:2.17.10-12.el10_2.1 |
| Red Hat Enterprise Linux 8 | mrtg | 0:2.17.7-1.el8_10.1 |
| Red Hat Enterprise Linux 8 | mrtg-debuginfo | 0:2.17.7-1.el8_10.1 |
| Red Hat Enterprise Linux 8 | mrtg-debugsource | 0:2.17.7-1.el8_10.1 |
| Red Hat Enterprise Linux 9 | mrtg | 0:2.17.7-12.el9_8.1 |
| Red Hat Enterprise Linux 9 | mrtg-debuginfo | 0:2.17.7-12.el9_8.1 |
| Red Hat Enterprise Linux 9 | mrtg-debugsource | 0:2.17.7-12.el9_8.1 |
| Rocky Linux 10 | mrtg | 0:2.17.10-12.el10_2.1 |
| Rocky Linux 8 | mrtg | 0:2.17.7-1.el8_10.1 |
| Rocky Linux 9 | mrtg | 0:2.17.7-12.el9_8.1 |
| Ubuntu 16.04 LTS | mrtg | no fix |
| Ubuntu 18.04 LTS | mrtg | no fix |
| Ubuntu 20.04 LTS | mrtg | no fix |
| Ubuntu 22.04 LTS | mrtg | no fix |
| Ubuntu 24.04 LTS | mrtg | no fix |
| Ubuntu 26.04 LTS | mrtg | no fix |
| Ubuntu 26.10 | mrtg | no fix |