What is CVE-2025-43972?

CVE-2025-43972 is a medium-severity vulnerability in Gobgp, classified under Improper Validation of Specified Quantity in Input. CVSS score: 6.8/10. Published 2025-04-21.

How severe is CVE-2025-43972?

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

Vulnerability in Gobgp

CVE-2025-43972

An issue was discovered in GoBGP before 3.35.0. An attacker can cause a crash in the pkg/packet/bgp/bgp.go flowspec parser by sending fewer than 20 bytes in a certain context.

EPSS: 0.005 (39.0th 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-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-2025-43972?: CVE-2025-43972 is a medium-severity vulnerability in Gobgp, classified under Improper Validation of Specified Quantity in Input. CVSS score: 6.8/10. Published 2025-04-21.
How severe is CVE-2025-43972?: Medium severity. CVSS v3 base score is 6.8 out of 10.