CVE-2026-41642

Name: CVE-2026-41642
Creator: NVD / NIST
Published: 2026-05-07T12:16:17.46+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2026-41642 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

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 UPDATE message contains an unrecognized Path Attribute marked as "Well-known," the daemon fails to interrupt the message handling flow. This results in an illegal memory access and a full process crash (panic). This issue has been patched in version 4.4.0.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.50%

39.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Osrg	Gobgp	4.3.0

References

https://github.com/osrg/gobgp/releases/tag/v4.4.0Patch, Product
https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4pxExploit, Vendor Advisory
https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4pxExploit, Vendor Advisory

Timeline

Published: May 7, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-41642?

How severe is CVE-2026-41642?

CVE-2026-41642 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2026-41642?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-41642?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST