CVE-2026-37459

high

Description

An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.

References

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37459.json

https://github.com/FRRouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9

https://bugzilla.redhat.com/show_bug.cgi?id=2466513

https://access.redhat.com/security/cve/CVE-2026-37459

https://access.redhat.com/errata/RHSA-2026:24370

https://access.redhat.com/errata/RHSA-2026:24347

Details

Source: Mitre, NVD

Published: 2026-05-04

Updated: 2026-07-15

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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