Vulnerability in Gobgp

CVE-2025-43971

An issue was discovered in GoBGP before 3.35.0. pkg/packet/bgp/bgp.go allows attackers to cause a panic via a zero value for softwareVersionLen.

EPSS: 0.005 (38.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Gobgp — versions 0
Osrg Gobgp

Weakness classification (CWE)

CWE-193 — Off-by-one Error

References

cve@mitre.org (Patch, Release Notes)
cve@mitre.org (Patch)

Frequently asked questions

What is CVE-2025-43971?: CVE-2025-43971 is a high-severity vulnerability in Gobgp, classified under Off-by-one Error. CVSS score: 8.6/10. Published 2025-04-21.
How severe is CVE-2025-43971?: High severity. CVSS v3 base score is 8.6 out of 10.