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Vulnerabilities

Vulnerability · CVE-2026-33945

Incus is a system container and virtual machine manager.

Published Mar 27, 2026 · catalog updated Jun 17, 2026 · Incus is a system

Check if you run it

No confirmed exploitation is on record for CVE-2026-33945. EPSS is 0.53%. Act only if a listed version of Incus is a system is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Incus is a system).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.53%
Remediation
Advisory link
Affected products
cpe linuxcontainers/incus

Incus is a system container and virtual machine manager. Incus instances have an option to provide credentials to systemd in the guest. For containers, this is handled through a shared directory. Prior to version 6.23.0, an attacker can set a configuration key named something like to cause Incus to write outside of the directory associated with the container. This makes use of the fact that the Incus syntax for such credentials is where can itself contain more periods. While it's not possible to read any data this way, it's possible to write to arbitrary files as root, enabling both privilege escalation and denial of service attacks. Version 6.23.0 fixes the issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe linuxcontainers/incusversion unspecified

How to fix CVE-2026-33945

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-33945. EPSS is 0.53%. Act only if a listed version of Incus is a system is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.53%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 27, 2026 · NIST NVD

    Detected

    Incus is a system container and virtual machine manager. Incus instances have an option to provide credentials to systemd in the guest. For containers, this is handled through a shared directory. Prior to version 6.23.0, an attacker can set a configuration key named something like to cause Incus to write outside of the directory associated with the container. This makes use of the fact that the In

  2. Jun 17, 2026 · NIST NVD

    Updated

    Incus is a system container and virtual machine manager. Incus instances have an option to provide credentials to systemd in the guest. For containers, this is handled through a shared directory. Prior to version 6.23.0, an attacker can set a configuration key named something like to cause Incus to write outside of the directory associated with the container. This makes use of the fact that the In

Sources

  • CVE.orgVulnerability recordCVE-2026-33945

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-33945

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-33945

    Incus is a system container and virtual machine manager. Incus instances have an option to provide credentials to systemd in the guest. For containers, this is handled through a shared directory. Prior to version 6.23.0, an attacker can set a configuration key named something lik

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.