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NVD description
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.ipv4_filtering` and `security.ipv6_filtering`. This can lead to ARP spoofing on the bridge and to fully spoof another VM/container on the same bridge. Commit 254dfd2483ab8de39b47c2258b7f1cf0759231c8 contains a patch for the issue.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
Incus users: CVE-2025-52890 is a high-severity `nftables` rule bypass in `Incus` that may affect security options. Monitor for vendor updates. #Incus #ContainerSecurity #infosec https://www.pulsepatch.io/posts/cve-2025-52890-incus-nftables-bypass
Post summary
The tweet warns Incus users of a high‑severity nftables rule‑bypass flaw (CVE‑2025‑52890) and urges them to watch for vendor updates.