CVE-2026-33711: Incus is a system container and virtual machine manager

Q: How do I fix CVE-2026-33711?

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

Q: Is CVE-2026-33711 being exploited?

CVE-2026-33711 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-2026-33711 affect?

CVE-2026-33711 affects incus. Severity is high (CVSS 7.8). Incus is a system container and virtual machine manager. Incus provides an API to retrieve VM screenshots. That API relies on the use of a temporary file for QEMU to write the screenshot to which is then picked up and sent to the user prior

Q: How urgent is CVE-2026-33711?

Priority 45/100. High severity; Public exploit reference; On your watchlist

This month

HIGH 7.8WATCHLISTUPGRADE

CVE-2026-33711 is a high-severity flaw (CVSS 7.8) 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 provides an API to retrieve VM screenshots. That API relies on the use of a temporary file for QEMU to write the screenshot to which is then picked up and sent to the user prior to deletion. As versions prior to 6.23.0 use predictable paths under /tmp for this, an attacker with local access to the system can abuse this mechanism by creating their own symlinks ahead of time. On the vas

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-61
Published	2026-03-26
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

2026-03-26 23:16 UTCPublished CVE record published
2026-06-17 10:37 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-2026-33711?

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

Is CVE-2026-33711 being exploited?

CVE-2026-33711 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-2026-33711 affect?

CVE-2026-33711 affects incus. Severity is high (CVSS 7.8). Incus is a system container and virtual machine manager. Incus provides an API to retrieve VM screenshots. That API relies on the use of a temporary file for QEMU to write the screenshot to which is then picked up and sent to the user prior

How urgent is CVE-2026-33711?

Priority 45/100. High severity; Public exploit reference; On your watchlist

Software pages

QEMU vulnerabilities

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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