Threats Tagged 'cve-2026-72694'

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.

A local privilege escalation vulnerability exists in the Multi Router Traffic Grapher (MRTG) daemon when started as root and then dropping privileges. An attacker with local access can exploit a symbolic link (symlink) following flaw by manipulating the PID file path, causing the root process to change ownership of arbitrary files to the daemon user. This vulnerability is tracked as CVE-2026-72694 and has a CVSS score of 7.1 (high severity). Red Hat has released security updates addressing this issue for Red Hat Enterprise Linux versions 9 and 10.

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.