CVE-2025-61106: Frrouting

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.

Affected products

• Frrouting Frrouting: from 4.0, up to and including 10.4.1

Published 2025-10-28. Last modified 2026-06-17.