7.5

CVE-2026-37461: osrg gobgp Out-of-bounds Read

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-37461DEBIAN-CVE-2026-37461GHSA-wmvj-f67g-qg4g
Published 04-05-2026Last modified 05-05-2026
Open JSON

Vulnerability summary

CVE-2026-37461 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in osrg gobgp. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.1% 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 2 · Related 2
OPENSUSE-SU-2026:21483-1USN-8348-1

Timeline

  1. 04-05-2026
    PublishedVulnerability first disclosed.
  2. 05-05-2026
    Last modifiedVulnerability information updated.

Description

An out-of-bounds read in the ParseIP6Extended function (/bgp/bgp.go) of gobgp v4.3.0 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 19-09-2026

19-09-202619-10-2026
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

Debian1 product
  • gobgpAll versions (No fix recorded) | < 4.4.0-1
Github.com/osrg/gobgp1 product
  • v4< 4.4.0
Osrg1 product
Ubuntu1 product
  • gobgp< 1.29-1ubuntu0.1+esm2 | < 2.12.0-1ubuntu0.1~esm3 | < 2.25.0-3ubuntu0.1+esm4 | < 3.23.0-1ubuntu0.3+esm4 | All versions (No fix recorded) | < 3.36.0-2ubuntu0.1~esm1

4 vendors · 4 products

References

10 links