CVE-2026-5107 FRRouting FRR EVPN Type-2 Route bgp_evpn.c process_type2_route access control

Low 2.3 Published 30 Mar 2026 Updated 30 Mar 2026

Remote attackers can bypass access controls in the EVPN Type-2 Route handler, requiring high complexity and difficult exploitation.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-5107?

CVE-2026-5107 is a low-severity missing authorization vulnerability in FRRouting FRR, published on 30 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability has been found in FRRouting FRR up to 10.5.1. This affects the function process_type2_route of the file bgpd/bgp_evpn.c of the component EVPN Type-2 Route Handler. The manipulation leads to improper access controls. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is reported as difficult. The identifier of the patch is 7676cad65114aa23adde583d91d9d29e2debd045. To fix this issue, it is recommended to deploy a patch.

Weakness: CWE-284, CWE-266

Which versions are affected by CVE-2026-5107?

It affects 1 product.

Linux distribution packages (1)

frr openSUSE:Tumbleweed All versions 10.5.1-3.1

Products include Frrouting Frrouting.

How do I fix CVE-2026-5107?

Apply the vendor's patch.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-5107 being exploited?

There is no known exploitation of CVE-2026-5107 in the wild and no public exploit code.

Sources

Also known as AZL-81087, DEBIAN-CVE-2026-5107, GHSA-27p7-fq6v-hh4m, UBUNTU-CVE-2026-5107, openSUSE-SU-2026:10606-1.