Distribution advisory
This page covers CVE-2026-5107 as tracked by Ubuntu, for the package frr. The fix is available in version 10.4.1-3ubuntu1.2; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. Rated impact: confidentiality none, integrity low, availability low.
CVSS metrics in full
The score comes from this vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- Attack vector: Network — reachable from anywhere that can route to the service.
- Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
- Attack requirements: None — no deployment-specific condition has to hold.
- Privileges required: Low — an ordinary user account is enough.
- User interaction: None — nobody has to be tricked into anything.
- Confidentiality impact: None.
- Integrity impact: Low — limited, and the attacker does not choose what is affected.
- Availability impact: Low — limited, and the attacker does not choose what is affected.
Weakness class
UBUNTU-CVE-2026-5107 is classified as CWE-266: Incorrect Privilege Assignment. A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.
Affected software
UBUNTU-CVE-2026-5107 is recorded against 2 packages.
- frr (fixed in 10.4.1-3ubuntu1.2)
- quagga
Timeline and source
Published on 30 March 2026 and last revised on 30 May 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
www.cve.org (Report)
github.com (Report)
vuldb.com (Report)
vuldb.com (Report)
vuldb.com (Report)
ubuntu.com (Advisory)
Other advisories for this package
frr has other advisories on record. If you are patching this one, these are worth checking on the same host:
Same weakness in other software
These advisories are the same class of weakness (CWE-266: Incorrect Privilege Assignment) in other software:
