Is there a public exploit for CVE-2026-55621?

No public exploit for CVE-2026-55621 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-55621?

CVE-2026-55621 scores CVSS 7.7 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.34%.

What does CVE-2026-55621 affect?

CVE-2026-55621 affects lxc, Canonical LXD, incus.

7.7 High

Incus is a system container and virtual machine manager.

CVE-2026-55621

Incus is a system container and virtual machine manager. Prior to version 7.2.0, missing authorization checks exist for custom volume copying where an attacker knowing the name of a project that they don't have access to and the name of a custom volume in that project can copy the custom volume to a new project. This issue could allow an attacker to access secrets in custom volumes they are not authorized to access. Version 7.2.0 patches the issue.

Assessment

CVSS: 7.7 (v3.1)
Severity: High
EPSS: 0.34% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 21 August 2026
Last updated: 5 November 2026
Affected: Canonical · lxc · LXD · incus
Assigner: GitHub_M

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

At the source

EUVD (ENISA)

References

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