CVE-2026-37457

Disclosed 2026-05-01

Description

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.

Severity & CVSS Score

7.5 HIGH CVSS 3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality None

Integrity None

Availability High

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Enumeration

CWE-ID	Name
CWE-787	Out-of-bounds Write

References

URL	Source
https://github.com/FRRouting/frr/commit/0e6882bc72c0278988a47b2f0f73b7a91099a25c	GitHub

Git Fixes

0e6882bc72c0278988a47b2f0f73b7a91099a25c
b413dbc239841ce4d13824119df4be9c6f06647e
55479934df4d5db06b6f893a32c43cafbd2b5fdb
a2d916ac819efd34c9a18d704aa01339accc3994
bc106c9fa9565d98cc982bcedb5615f259453348
a2d65c98d3571194ea13b9435ea90531a4142020
373d9d715c7a5524155493f7a5ea331b3407a62c
70dbd170fbc37570197102274614c9a4a2a9056a

Raw Data

CVE-2026-37457.cve.json — CVE record (JSON)
CVE-2026-37457.frr.json — FRR-specific data (JSON)