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CVE-2026-33542

MEDIUM CVSS 4.0: 5.7 EPSS 0.04%
Updated Mar 30, 2026
Incus
Parameter Value
CVSS 5.7 (MEDIUM)
Affected Versions before 6.23.0
Fixed In 6.23.0
Type CWE-295 (Improper Certificate Validation)
Vendor Incus
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Linuxcontainers Incus
cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:*
6.23.0