Is this vulnerability remotely exploitable?

It can be remotely exploitable if an attacker can interact with the Incus API or any management interface that allows configuration of `systemd.credential.*` keys for containers. The critical factor is the ability to set or modify those configuration keys, which might be accessible over the network in some deployments.

What level of access does an attacker need to exploit this?

The attacker must be able to configure or update Incus instance settings that control systemd credentials in the guest. This typically corresponds to Incus project or instance-level administrative capabilities, or any compromised account or service that has permission to set those configuration keys.

What is the safest general fix pattern for this class of issue?

The most robust fix is to treat any user- or tenant-controlled component of a path as untrusted data: normalize the resulting path, reject directory traversal constructs, and enforce that the final path is a child of a specific, known directory before writing. Additionally, map logical configuration keys to filenames via controlled transformations or allowlists rather than directly interpreting them as paths.

Severity:

CRITICAL RISK

(9.9)

Path Traversal in systemd Credential Handling (CWE-22) in Incus Containers

CVE-2026-33945

Published:

Mar 26, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Path Traversal / Directory Traversal

CWE:

CWE-22

Impact:

Arbitrary File Write as Root (Privilege Escalation and Denial of Service)

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

Vulnerability Type

Category:

Path Traversal / Directory Traversal

CWE:

CWE-22

Impact:

Arbitrary File Write as Root (Privilege Escalation and Denial of Service)

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Path Traversal in systemd Credential Handling (CWE-22) in Incus Containers

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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