What is CVE-2025-43970?

CVE-2025-43970 is a medium-severity vulnerability in Gobgp, classified under Improper Validation of Specified Quantity in Input. CVSS score: 4.3/10. Published 2025-04-21.

How severe is CVE-2025-43970?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Gobgp

CVE-2025-43970

An issue was discovered in GoBGP before 3.35.0. pkg/packet/mrt/mrt.go does not properly check the input length, e.g., by ensuring that there are 12 bytes or 36 bytes (depending on the address family).

EPSS: 0.004 (30.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.

Affected products

Gobgp — versions 0
Osrg Gobgp

Weakness classification (CWE)

CWE-1284 — Improper Validation of Specified Quantity in Input

References

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

Frequently asked questions

What is CVE-2025-43970?: CVE-2025-43970 is a medium-severity vulnerability in Gobgp, classified under Improper Validation of Specified Quantity in Input. CVSS score: 4.3/10. Published 2025-04-21.
How severe is CVE-2025-43970?: Medium severity. CVSS v3 base score is 4.3 out of 10.