Incorrect Privilege Assignment in frr - CVE-2026-5107
Published: April 17, 2026
Vulnerability identifier: #VU126425
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-5107
CWE-ID: CWE-266
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to modify routing information or disrupt network operations.
The vulnerability exists due to incorrect privilege assignment in process_type2_route function of the EVPN Type-2 Route Handler when handling remote requests. A remote user can send specially crafted requests to modify routing information or disrupt network operations.
Affected software
frr
Ubuntu
frr (Ubuntu package)
Ubuntu
frr (Ubuntu package)
How to mitigate CVE-2026-5107
Install security update from vendor's website.
frr - update to 10.6.0
frr (Ubuntu package) - addressed in versions 7.2.1-1ubuntu0.2+esm4, 8.1-1ubuntu1.15, 8.4.4-1.1ubuntu6.6, 10.4.1-3ubuntu1.2
frr (Ubuntu package) - addressed in versions 7.2.1-1ubuntu0.2+esm4, 8.1-1ubuntu1.15, 8.4.4-1.1ubuntu6.6, 10.4.1-3ubuntu1.2