Vulnerability in Netgate pfSense-pkg-frr

[ Description ]Official description

Netgate pfSense FRR package (pfSense-pkg-frr) 2.0.2_1 and source revision 2.1.2_1 contain an OS command injection vulnerability in the FRR status filter. An authenticated WebGUI user with only the page-status-frr privilege can supply a filter value that breaks out of a single-quoted sed expression into which escapeshellarg() output is concatenated. Shell command substitution is then evaluated by a popen() pipeline, allowing attacker-selected commands to execute as root. There are updated FRR packages for pfSense Plus 26.07/26.03.1 and CE 2.9.0/2.8.1.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund14 Oct 2026WID-SEC-2026-3974

  Netgate pfSense: Vulnerability allows arbitrary code execution with administrator rights Translated from German

  CVE-2026-110908

[ References ]References

• github.com/pfsense/FreeBSD-ports/blob/a621624266b19a7f48b1f94a60821d2c2fc6ee4c/net/pfSe…
• redmine.pfsense.org/issues/17134