CVE-2026-37457: An off-by-one out-of-bounds write vulnerability in the bgp_flowspec_op_decode() function (bgpd/bgp_flowspec_util.c) of FRRouting (FRR) stable/10.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted FlowSpec component.
Overview
- Severity
- High (CVSS 7.5)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-May
- Released
- 2026-05-05
- Last Updated
- 2026-06-03
- EPSS Score
- 0.26% (percentile: 17.4%)
Affected Products (4)
Other
- 20873-17086
- 21208-17084
- 21417-17084
Open Source Software
- azl3 frr 10.5.0-3 on Azure Linux 3.0
Revision History
- 2026-05-05: Information published.
- 2026-05-06: Information published.
- 2026-05-08: Information published.
- 2026-06-03: Information published.