CVE-2026-33945: Incus is a system container and virtual machine manager

Q: How do I fix CVE-2026-33945?

incus: upgrade to 6.23.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-33945 being exploited?

CVE-2026-33945 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-33945 affect?

CVE-2026-33945 affects incus. Severity is critical (CVSS 9.9). 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

Q: How urgent is CVE-2026-33945?

Priority 49/100. Critical severity; On your watchlist

This month

CRITICAL 9.9WATCHLISTUPGRADE

CVE-2026-33945 is a critical-severity flaw (CVSS 9.9) affecting incus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 `systemd.credential.../../../../../../root/.bashrc` to cause Incus to write outside of the `credentials` directory associated with the container. This makes use of the

Why this priority

Critical severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-03-27
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: linuxcontainers

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-27 00:16 UTCPublished CVE record published
2026-06-17 10:38 UTCUpdated Record last modified

linuxcontainers incus UPGRADE

Affected: < 6.23.0

Fixed in: 6.23.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy incus || rpm -q incus || incus --version

2. UPGRADE to 6.23.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade incus

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade incus

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33945?

incus: upgrade to 6.23.0. Exact commands for each OS are on this page.

Is CVE-2026-33945 being exploited?

CVE-2026-33945 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33945 affect?

CVE-2026-33945 affects incus. Severity is critical (CVSS 9.9). 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

How urgent is CVE-2026-33945?

Priority 49/100. Critical severity; On your watchlist

Related CVEs

CVE-2026-41648 MEDIUM 5.0 UPGRADE Incus is a system container and virtual machine manager
CVE-2026-41647 MEDIUM 6.5 UPGRADE Incus is a system container and virtual machine manager
CVE-2026-41684 MEDIUM 6.5 UPGRADE Incus is a system container and virtual machine manager
CVE-2026-41685 MEDIUM 4.3 UPGRADE Incus is a system container and virtual machine manager
CVE-2026-40195 MEDIUM 6.5 UPGRADE Incus is a system container and virtual machine manager

References

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