CVE-2025-52889

Incus vulnerable to DoS through antispoofing nftables firewall rule bypass on bridge networks with ACLs

Published Jun 25, 2025 CVSS 3.1 · 3.4 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-19115 Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks
Github GHSA Github GHSA GHSA-9q7c-qmhm-jv86 Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00026}

epss

{'score': 0.0003}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Incus vulnerable to DoS through antispoofing nftables firewall rule bypass on bridge networks with ACLs
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 25, 2025, 5:54 PM
Reserved
Jun 20, 2025, 5:42 PM
Status
Deferred
Published
Jun 25, 2025, 5:15 PM
Modified
Jun 17, 2026, 9:37 AM