PatchSiren

FRRouting CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

HIGH FRRouting CVE published 2026-05-04

CVE-2026-37459

CVE-2026-37459 is a high-severity vulnerability in FRRouting (FRR) that allows attackers to cause a Denial of Service (DoS) via a crafted BGP UPDATE message. The vulnerability is caused by an integer underflow in FRR versions stable/10.0 to stable/10.6. The vulnerability has a CVSS score of 7.5 and is classified as HIGH. The CVE was published on May 4, 2026, and last modified on June 30, 2026.