CVE-2025-52889
Incus vulnerable to DoS through antispoofing nftables firewall rule bypass on bridge networks with ACLs
- 3.4LowCVSS base score
- 0.25%Exploitation in 30 daysEPSS · top 83% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
Incus is a system container and virtual machine manager. When using an ACL on a device connected to a bridge, Incus version 6.12 and 6.13 generates nftables rules for local services (DHCP, DNS...) that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to DHCP pool exhaustion and opens the door for other attacks. A patch is available at commit 2516fb19ad8428454cb4edfe70c0a5f0dc1da214.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits1
References tagged exploit1 reference
- https://github.com/lxc/incus/security/advisories/GHSA-9q7c-qmhm-jv86 (opens in a new tab)x_refsource_CONFIRMexploit
Timeline
ID reserved
By GitHub_M
- 5 days later
· 5 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Low3.4 | CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L |
| NVDNVD · Deferred | 3.1 | Low3.4 | CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 0.25% · top 83% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.4.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/lxc/incus/v6GHSA-9q7c-qmhm-jv86 (opens in a new tab)
References
References3
- https://github.com/lxc/incus/security/advisories/GHSA-9q7c-qmhm-jv86 (opens in a new tab)x_refsource_CONFIRMexploit
- https://github.com/lxc/incus/commit/2516fb19ad8428454cb4edfe70c0a5f0dc1da214 (opens in a new tab)x_refsource_MISC
- https://github.com/lxc/incus/commit/a7c33301738aede3c035063e973b1d885d9bac7c (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-19115 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9q7c-qmhm-jv86 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-52889)Record last updated .