PT-2026-36875 · Frrouting · Frrouting

Jiahao Lei · Published 2026-05-04 · Updated 2026-06-03 · CVE-2026-37459

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions FRRouting (FRR) versions 10.0 through 10.6

Description An integer underflow occurs when a program calculates a value that is smaller than the minimum value the variable can hold, often wrapping around to a very large number. This issue allows attackers to cause a Denial of Service (DoS) by sending a specially crafted BGP UPDATE message.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2026-37459

OPENSUSE-SU-2026:10721-1

USN-8376-1

Affected Products

Frrouting

References · 20

• https://cve.org/CVERecord?id=CVE-2026-37459 · Security Note
• https://ubuntu.com/security/CVE-2026-37459 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-28532 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-37457 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-37459 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8376-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-37459 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10721-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8376-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-37458 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-37459 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-37459 · Security Note
• https://github.com/FRRouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9 · Note
• https://suse.com/security/cve/CVE-2026-28532 · Note
• https://twitter.com/VulmonFeeds/status/2051408774577938601 · Twitter Post