7.5

CVE-2026-37460: frr Improper Input Validation

CVSS: 7.5v3.1HighAwaiting analysis
AliasesRHSA-2026:49511RHSA-2026:49527RHSA-2026:49607
Published 03-06-2026Last modified 05-06-2026
Open JSON

Vulnerability summary

CVE-2026-37460 is a high (CVSS 7.5) Improper Input Validation vulnerability in frr. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.61%
0%100%
Low · +0.27 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2026:24347

Timeline

  1. 03-06-2026
    PublishedVulnerability first disclosed.
  2. 05-06-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.61%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

+0.27 pp

From 0.34% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.61%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat8 products
  • frr< 0:7.5.1-25.el8_10 | < 0:8.5.3-15.el9_8.1
  • frr-debuginfo< 0:7.5.1-25.el8_10 | < 0:8.5.3-15.el9_8.1
  • frr-debugsource< 0:7.5.1-25.el8_10 | < 0:8.5.3-15.el9_8.1
  • frr-selinux< 0:7.5.1-25.el8_10 | < 0:8.5.3-15.el9_8.1
  • frr10< 0:10.4.3-3.el9_8.2
Ubuntu2 products
  • frr< 7.2.1-1ubuntu0.2+esm4 | < 8.1-1ubuntu1.15 | < 8.4.4-1.1ubuntu6.6 | < 10.4.1-3ubuntu1.2
  • quaggaAll versions (No fix recorded)
Debian1 product
  • frrAll versions (No fix recorded) | < 10.6.1-1

3 vendors · 11 products

References

19 links
Show all 19 references