Auth bypass in Lxc Incus
CVE-2025-52890
Incus is a system container and virtual machine manager. When using an ACL on a device connected to a bridge, Incus versions 6.12 and 6.13generates nftables rules that partially bypass security options `security.mac_filtering`, `security.i…
Vulnerability class: Broken Access Control
EPSS: 0.001 (31.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:H.
Affected products
- Lxc Incus — versions >= 6.12, <= 6.13
Weakness classification (CWE)
References
- https://github.com/lxc/incus/security/advisories/GHSA-p7fw-vjjm-2rwp (x_refsource_CONFIRM)
- https://github.com/lxc/incus/commit/254dfd2483ab8de39b47c2258b7f1cf0759231c8 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-52890?
- CVE-2025-52890 is a high-severity vulnerability in Lxc Incus, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2025-06-25.
- How severe is CVE-2025-52890?
- High severity. CVSS v3 base score is 8.1 out of 10.