CVE-2025-52890 | Incus vulnerable to antispoofing nftables firewall rule bypass on bridge networks with ACLs

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.

Published: 2025-06-25 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-52890 is rated Moderate Risk (43.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.12%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-52890

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-21 0.02% 0.12% +0.11%
2 2025-06-26 — 0.02% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-52890

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.7 5.8 [email protected]

Weakness enumeration for CVE-2025-52890

GitHub Security Advisory for CVE-2025-52890

GHSA-p7fw-vjjm-2rwp · Severity: high · Ecosystem: go — Incus creates nftables rules that partially bypass security options

OS Trackers for CVE-2025-52890

vendor priority summary link
alpine high CVE-2025-52890: 1 source package rows (incus-feature); 1 state rows across 1 repos (edge-community); fixed 1, open 0. https://security.alpinelinux.org/vuln/CVE-2025-52890
debian unimportant CVE-2025-52890 unimportant priority: Debian including 1 source packages (incus), 3 status rows across 3 suites (forky, sid, trixie): resolved 3. https://security-tracker.debian.org/tracker/CVE-2025-52890
ubuntu medium CVE-2025-52890 medium priority: Ubuntu including 1 source packages (incus), 6 status rows across 6 suites (jammy, noble, oracular, plucky, questing, upstream): needs-triage 3, ignored 2, DNE 1. https://ubuntu.com/security/CVE-2025-52890

Affected software / configurations for CVE-2025-52890

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-52890

cvelogic Threat Intelligence