Privilege escalation in Frrouting Frr
CVE-2026-5107
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (28.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Frrouting Frr — versions 10.5.0, 10.5.1
- Frrouting — versions 10.5.0, 10.5.1
Weakness classification (CWE)
References
- vuldb.com/vuln/354132 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/354132/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/780123 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/FRRouting/frr/pull/21098 (issue-tracking, Patch, patch, Issue Tracking)
- github.com/FRRouting/frr/commit/7676cad65114aa23adde583d91d9d29e2debd045 (Patch, patch)
- github.com/FRRouting/frr/ (Product, product)
Frequently asked questions
- What is CVE-2026-5107?
- CVE-2026-5107 is a medium-severity vulnerability in Frrouting Frr, classified under Incorrect Privilege Assignment. CVSS score: 4.2/10. Published 2026-03-30.
- How severe is CVE-2026-5107?
- Medium severity. CVSS v3 base score is 4.2 out of 10.