What is CVE-2025-43973?

CVE-2025-43973 is a medium-severity vulnerability in Gobgp, classified under Off-by-one Error. CVSS score: 6.8/10. Published 2025-04-21.

How severe is CVE-2025-43973?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Gobgp

CVE-2025-43973

An issue was discovered in GoBGP before 3.35.0. pkg/packet/rtr/rtr.go does not verify that the input length corresponds to a situation in which all bytes are available for an RTR message.

EPSS: 0.005 (39.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/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-2025-43973?: CVE-2025-43973 is a medium-severity vulnerability in Gobgp, classified under Off-by-one Error. CVSS score: 6.8/10. Published 2025-04-21.
How severe is CVE-2025-43973?: Medium severity. CVSS v3 base score is 6.8 out of 10.