CVE-2026-37457
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.
CVE-2026-37457 is fixed in 7 products on 1 platform, first by frr 8.1-1ubuntu1.16, 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
0.0039
33rd percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| frr · Debian 12.15 (bookworm) | 8.4.4-1.1~deb12u2 | DEBIAN-CVE-2026-37457 | May 15, 2026 |
| frr · Debian 13.5 (trixie) | 10.3-3+deb13u1 | DEBIAN-CVE-2026-37457 | May 15, 2026 |
| frr · Debian 14 | 10.6.0-2 | DEBIAN-CVE-2026-37457 | May 15, 2026 |
| frr · RHEL 10 | 10.4.4-1.el10_2 | RHSA-2026:24347 | Jun 24, 2026 |
| frr · RHEL 8 | 0:7.5.1-24.el8_10 | RHSA-2026:24340 | Jun 24, 2026 |
| frr · RHEL 9 | 0:8.5.3-13.el9_8 | RHSA-2026:24371 | Jun 24, 2026 |
| frr · Ubuntu 22.04.1 LTS (jammy) | 8.1-1ubuntu1.16 | frr 8.1-1ubuntu1.16 | May 4, 2026 |
| frr · Ubuntu 24.04.5 LTS (noble) | 8.4.4-1.1ubuntu6.7 | frr 8.4.4-1.1ubuntu6.7 | May 4, 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 · almalinux 8 | 7.5.1-24.el8_10 | ALSA-2026:24340 | Jun 8, 2026 |
| frr · almalinux 9 | 8.5.3-13.el9_8 | ALSA-2026:24371 | Jun 8, 2026 |
| frr · ol 10 | 0:10.4.4-1.el10_2 | ELSA-2026-24347 | Jul 16, 2026 |
| frr · ol 8 | 0:7.5.1-24.0.1.el8_10 | ELSA-2026-24340 | Jun 8, 2026 |
| frr · ol 9 | 0:8.5.3-13.el9_8 | ELSA-2026-24371 | Jun 23, 2026 |
| frr · rocky 10 | 0:10.4.4-1.el10_2 | RLSA-2026:24347 | Jun 11, 2026 |
| frr · rocky 8 | 0:7.5.1-24.el8_10 | RLSA-2026:24340 | Jun 11, 2026 |
| frr · rocky 9 | 0:8.5.3-13.el9_8 | RLSA-2026:24371 | Jun 11, 2026 |
| frr · sles 15.6 | 8.5.7-150500.4.43.1 | SUSE-SU-2026:2454-1 | Jun 18, 2026 |
| frr · sles 15.7 | 10.2.6-150700.3.10.1 | SUSE-SU-2026:2457-1 | Jun 18, 2026 |
| frr · sles 16.0 | 10.2.6-160000.1.1 | SUSE-SU-2026:22026-1 | Jun 3, 2026 |
| frr-pythontools · Ubuntu 22.04.1 LTS (jammy) | 8.1-1ubuntu1.16 | frr-pythontools 8.1-1ubuntu1.16 | May 4, 2026 |
| frr-pythontools · Ubuntu 24.04.5 LTS (noble) | 8.4.4-1.1ubuntu6.7 | frr-pythontools 8.4.4-1.1ubuntu6.7 | May 4, 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 22.04.1 LTS (jammy) | 8.1-1ubuntu1.16 | frr-rpki-rtrlib 8.1-1ubuntu1.16 | May 4, 2026 |
| frr-rpki-rtrlib · Ubuntu 24.04.5 LTS (noble) | 8.4.4-1.1ubuntu6.7 | frr-rpki-rtrlib 8.4.4-1.1ubuntu6.7 | 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 · RHEL 8 | 0:7.5.1-24.el8_10 | RHSA-2026:24340 | Jun 24, 2026 |
| frr-selinux · RHEL 9 | 0:8.5.3-13.el9_8 | RHSA-2026:24371 | Jun 24, 2026 |
| frr-selinux · almalinux 10 | 10.4.4-1.el10_2 | ALSA-2026:24347 | Jun 8, 2026 |
| frr-selinux · almalinux 8 | 7.5.1-24.el8_10 | ALSA-2026:24340 | Jun 8, 2026 |
| frr-selinux · almalinux 9 | 8.5.3-13.el9_8 | ALSA-2026:24371 | Jun 8, 2026 |
| frr-selinux · ol 10 | 0:10.4.4-1.el10_2 | ELSA-2026-24347 | Jul 16, 2026 |
| frr-selinux · ol 8 | 0:7.5.1-24.0.1.el8_10 | ELSA-2026-24340 | Jun 8, 2026 |
| frr-selinux · ol 9 | 0:8.5.3-13.el9_8 | ELSA-2026-24371 | Jun 23, 2026 |
| frr-snmp · Ubuntu 22.04.1 LTS (jammy) | 8.1-1ubuntu1.16 | frr-snmp 8.1-1ubuntu1.16 | May 4, 2026 |
| frr-snmp · Ubuntu 24.04.5 LTS (noble) | 8.4.4-1.1ubuntu6.7 | frr-snmp 8.4.4-1.1ubuntu6.7 | May 4, 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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