Out-of-bounds Read in Osrg Gobgp

CVE-2026-37461

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.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (26.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-37461: held from 0.006 to 0.003.

EPSS over last 30 days · oldest: 0.006 · newest: 0.003 · change: -0.003

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-37461?
CVE-2026-37461 is a high-severity vulnerability in Osrg Gobgp, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-05-04.
How severe is CVE-2026-37461?
High severity. CVSS v3 base score is 7.5 out of 10.