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Fencer Intel
high 7.5

CVE-2026-37460 json

Missing input validation in the rfapiRibBi2Ri() function (rfapi_rib.c) of FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to ca…

published 5mo ago modified 3mo ago also EUVD-2026-34083

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

Missing input validation in the rfapiRibBi2Ri() function (rfapi_rib.c) of 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.

Patch / fix

  • frr Debian 14 10.6.1-1

debian advisories DEBIAN-CVE-2026-37460

  • frr Ubuntu 22.04 LTS 8.1-1ubuntu1.15
  • frr Ubuntu 24.04 LTS 8.4.4-1.1ubuntu6.6
  • frr Ubuntu 25.10 10.4.1-3ubuntu1.2
  • frr Ubuntu Pro 20.04 LTS 7.2.1-1ubuntu0.2+esm4

ubuntu advisories UBUNTU-CVE-2026-37460

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • frr10 RHEL 9 10.4.3-3.el9_8.2
  • frr10-selinux RHEL 9 10.4.3-3.el9_8.2
  • frr RHEL 8 7.5.1-25.el8_10
  • frr-selinux RHEL 8 7.5.1-25.el8_10
  • frr RHEL 9 8.5.3-15.el9_8.1
  • frr-selinux RHEL 9 8.5.3-15.el9_8.1
  • frr RHEL 10.2 10.4.4-1.el10_2
  • frr-selinux RHEL 10.2 10.4.4-1.el10_2

red hat advisories RHSA-2026:49607RHSA-2026:49511RHSA-2026:49527RHSA-2026:24347

  • frr AlmaLinux 8 7.5.1-25.el8_10
  • frr-selinux AlmaLinux 8 7.5.1-25.el8_10
  • frr AlmaLinux 9 8.5.3-15.el9_8.1
  • frr-selinux AlmaLinux 9 8.5.3-15.el9_8.1
  • frr10 AlmaLinux 9 10.4.3-3.el9_8.2
  • frr10-selinux AlmaLinux 9 10.4.3-3.el9_8.2
  • frr AlmaLinux 10 10.4.4-1.el10_2
  • frr-selinux AlmaLinux 10 10.4.4-1.el10_2

almalinux advisories ALSA-2026:49511ALSA-2026:49527ALSA-2026:49607ALSA-2026:24347

  • frr Rocky Linux 9 8.5.3-15.el9_8.1
  • frr10 Rocky Linux 9 10.4.3-3.el9_8.2
  • frr Rocky Linux 8 7.5.1-25.el8_10

rocky linux advisories RLSA-2026:49527RLSA-2026:49607RLSA-2026:49511

Is CVE-2026-37460 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-37460 updated cvss 7.5

frr: FRRouting: Denial of Service via crafted BGP UPDATE message

  • Red Hat Enterprise Linux AppStream (v. 8) frr 7.5.1-25.el8_10, frr-selinux 7.5.1-25.el8_10
    fixed: vendor fix RHSA-2026:49511
  • Red Hat Enterprise Linux AppStream (v. 9) frr 8.5.3-15.el9_8.1, frr10 10.4.3-3.el9_8.2, frr-selinux 8.5.3-15.el9_8.1, frr10-selinux 10.4.3-3.el9_8.2
    fixed: vendor fix RHSA-2026:49527
  • Red Hat Enterprise Linux AppStream (v. 10) frr 10.4.4-1.el10_2, frr-selinux 10.4.4-1.el10_2
    fixed: vendor fix RHSA-2026:24347

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
5mo ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.