CVE-2025-52889— Incus vulnerable to DoS through antispoofing nftables firewall rule bypass on bridge networks with ACLs
Quick assessment
Affected
lxc incus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Incus是LXC开源的一个系统容器和虚拟机管理器。 Incus 6.12版本和6.13版本存在安全漏洞，该漏洞源于nftables规则部分绕过安全选项，可能导致DHCP池耗尽。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-52889
Vulnerability Information
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Vulnerability Title
Incus vulnerable to DoS through antispoofing nftables firewall rule bypass on bridge networks with ACLs
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Incus 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Incus是LXC开源的一个系统容器和虚拟机管理器。 Incus 6.12版本和6.13版本存在安全漏洞，该漏洞源于nftables规则部分绕过安全选项，可能导致DHCP池耗尽。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-52889
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V. Comments for CVE-2025-52889
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