What is CVE-2026-41642?

CVE-2026-41642 is a high-severity vulnerability in Osrg Gobgp, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-05-07.

How severe is CVE-2026-41642?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Osrg Gobgp

CVE-2026-41642

GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UP…

EPSS: 0.001 (17.4th percentile) — read the EPSS interpretation.

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.

Affected products

Osrg Gobgp — versions 4.3.0, = 4.3.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

https://github.com/osrg/gobgp/releases/tag/v4.4.0 (Product, Patch, x_refsource_MISC)
https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-41642?: CVE-2026-41642 is a high-severity vulnerability in Osrg Gobgp, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-05-07.
How severe is CVE-2026-41642?: High severity. CVSS v3 base score is 7.5 out of 10.