CVE-2025-43973: Osrg Gobgp

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Osrg Gobgp: before 3.35.0 (fixed in 3.35.0)

Published 2025-04-21. Last modified 2026-06-17.