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TI-2025-32926 Aliases CVE-2025-52890GHSA-p7fw-vjjm-2rwp

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

Priority HIGH 70CWE-863Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0023 13th percentileScored 2026-11-07
Fix Fixed github.com/lxc/incus/v6 (Go): 6.14.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
lxcincus6.12 – 6.13—No fix listedCNA
—github.com/lxc/incus/v6 (Go)6.12.0 to before 6.14.06.14.0Patch availableGHSA-p7fw-vjjm-2rwp
  • incus Vendorlxc Affected 6.12 – 6.13 Fixed in — No fix listed CNA
  • github.com/lxc/incus/v6 (Go) Vendor— Affected 6.12.0 to before 6.14.0 Fixed in 6.14.0 Patch available GHSA-p7fw-vjjm-2rwp

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:*——lxc
  • cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:* Versions — — ·lxc

Remediation

  • Fix · GHSA-p7fw-vjjm-2rwp github.com/lxc/incus/v6 (Go) Fixed in 6.14.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-52890
  2. 2026-10-03 Alias added: GHSA-p7fw-vjjm-2rwp

References

Advisory 1

Other 3

  • TI-2019-04061 runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows… CVSS 3.1HIGH 8.6
  • TI-2026-45063 Incus vulnerable to root RCE via image backup.yaml symlink CVSS 3.1CRITICAL 9.9
  • TI-2026-44978 Incus: Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge CVSS 3.1CRITICAL 9.9
  • TI-2026-36039 Incus has an arbitrary file write on its client due to trusted image hash CVSS 3.1CRITICAL 9.9
  • TI-2026-36024 Incus has an arbitrary file write via path traversal in S3 multipart upload CVSS 3.1CRITICAL 9.9
  • TI-2026-36022 Incus has a restricted project bypass leading to arbitrary command execution CVSS 3.1CRITICAL 9.9
See all 63 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences