CVE-2026-37459

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.

Score

CVSS 3.1 7.5 High

Status

Deferred - cve@mitre.org

Published

2026-05-04

Last modified

2026-07-15

Weaknesses

CWE-191, CWE-400

Affected products

• Enterprise Linux (Redhat)

References

• https://github.com/FRRouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9
• https://access.redhat.com/errata/RHSA-2026:24347
• https://access.redhat.com/errata/RHSA-2026:24370
• https://access.redhat.com/security/cve/CVE-2026-37459
• https://bugzilla.redhat.com/show_bug.cgi?id=2466513
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37459.json