CVE-2026-33542 | BDVDB-2026-323240 Detail

lxcincus

Description#

Incus is a system container and virtual machine manager. Prior to version 6.23.0, a lack of validation of the image fingerprint when downloading from simplestreams image servers opens the door to image cache poisoning and under very narrow circumstances exposes other tenants to running attacker controlled images rather than the expected one. Version 6.23.0 patches the issue.

Impact#

Per CVSS v4.0: confidentiality impact low, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-295 Improper Certificate Validation

References#

https://github.com/lxc/incus/security/advisories/GHSA-p8mm-23gg-jc9r

Exploit#

No public exploit known

History#

Version 12026-03-26Record published in the CVE List.
Version 22026-03-30Most recent update recorded in the CVE List.

Published

Published: 2026-03-26
Last modified: 2026-03-30

Vendor information

Vendor: lxc
Product: incus

All lxc vulnerabilities

Score

5.7 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 7.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 6.23.0
Fixed
Not stated

Scoring System

CVSS v4.0

5.7 Medium

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N/E:P

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Attack Requirements	Present
Privileges Required	Low
User Interaction	None
Vulnerable System Confidentiality	Low
Vulnerable System Integrity	High
Vulnerable System Availability	None
Subsequent System Confidentiality	Low
Subsequent System Integrity	High
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).