CVE-2020-12831: Linuxfoundation Free Range Routing

Medium severity, CVSS 5.3. EPSS: 1.4% chance of exploitation in the next 30 days.

An issue was discovered in FRRouting FRR (aka Free Range Routing) through 7.3.1. When using the split-config feature, the init script creates an empty config file with world-readable default permissions, leading to a possible information leak via tools/frr.in and tools/frrcommon.sh.in. NOTE: some parties consider this user error, not a vulnerability, because the permissions are under the control of the user before any sensitive information is present in the file

Affected products

• Linuxfoundation Free Range Routing: up to and including 7.3.1

Published 2020-05-13. Last modified 2026-06-17.