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.
CVE-2026-37459 is fixed in 7 products on 1 platform, first by frr 10.4.1-3ubuntu1.4, released May 4, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0037
31st percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| frr · Debian 14 | 10.6.0-2 | DEBIAN-CVE-2026-37459 | May 15, 2026 |
| frr · RHEL 10 | 10.4.4-1.el10_2 | RHSA-2026:24347 | Jun 24, 2026 |
| frr · Ubuntu 25.10 (questing) | 10.4.1-3ubuntu1.4 | frr 10.4.1-3ubuntu1.4 | May 4, 2026 |
| frr · Ubuntu 26.04.1 LTS (resolute) | 10.5.1-1ubuntu4.1 | frr 10.5.1-1ubuntu4.1 | May 4, 2026 |
| frr · almalinux 10 | 10.4.4-1.el10_2 | ALSA-2026:24347 | Jun 8, 2026 |
| frr · ol 10 | 0:10.4.4-1.el10_2 | ELSA-2026-24347 | Jul 16, 2026 |
| frr · rocky 10 | 0:10.4.4-1.el10_2 | RLSA-2026:24347 | Jun 11, 2026 |
| frr-pythontools · Ubuntu 25.10 (questing) | 10.4.1-3ubuntu1.4 | frr-pythontools 10.4.1-3ubuntu1.4 | May 4, 2026 |
| frr-pythontools · Ubuntu 26.04.1 LTS (resolute) | 10.5.1-1ubuntu4.1 | frr-pythontools 10.5.1-1ubuntu4.1 | May 4, 2026 |
| frr-rpki-rtrlib · Ubuntu 25.10 (questing) | 10.4.1-3ubuntu1.4 | frr-rpki-rtrlib 10.4.1-3ubuntu1.4 | May 4, 2026 |
| frr-rpki-rtrlib · Ubuntu 26.04.1 LTS (resolute) | 10.5.1-1ubuntu4.1 | frr-rpki-rtrlib 10.5.1-1ubuntu4.1 | May 4, 2026 |
| frr-selinux · almalinux 10 | 10.4.4-1.el10_2 | ALSA-2026:24347 | Jun 8, 2026 |
| frr-selinux · ol 10 | 0:10.4.4-1.el10_2 | ELSA-2026-24347 | Jul 16, 2026 |
| frr-snmp · Ubuntu 25.10 (questing) | 10.4.1-3ubuntu1.4 | frr-snmp 10.4.1-3ubuntu1.4 | May 4, 2026 |
| frr-snmp · Ubuntu 26.04.1 LTS (resolute) | 10.5.1-1ubuntu4.1 | frr-snmp 10.5.1-1ubuntu4.1 | May 4, 2026 |
| frr10 · RHEL 9 | 0:10.4.3-3.el9_8 | RHSA-2026:24370 | Jun 24, 2026 |
| frr10 · almalinux 9 | 10.4.3-3.el9_8 | ALSA-2026:24370 | Jun 8, 2026 |
| frr10 · ol 9 | 0:10.4.3-3.el9_8 | ELSA-2026-24370 | Jun 24, 2026 |
| frr10 · rocky 9 | 0:10.4.3-3.el9_8 | RLSA-2026:24370 | Jun 11, 2026 |
| frr10-selinux · RHEL 9 | 0:10.4.3-3.el9_8 | RHSA-2026:24370 | Jun 24, 2026 |
| frr10-selinux · almalinux 9 | 10.4.3-3.el9_8 | ALSA-2026:24370 | Jun 8, 2026 |
| frr10-selinux · ol 9 | 0:10.4.3-3.el9_8 | ELSA-2026-24370 | Jun 24, 2026 |
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