CVE-2026-63623

MEDIUM CVSS 3.1: 5.5
Updated Aug 11, 2026
Red Hat
Parameter Value
CVSS 5.5 (MEDIUM)
Type CWE-732 (Incorrect Permission Assignment)
Vendor Red Hat
Public PoC No

A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images were temporarily world-readable. This was caused by the `qemu-img` utility running with overly permissive file creation settings, allowing any local user to read the full guest disk contents.

This vulnerability could lead to sensitive information disclosure from guest virtual machines.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

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

CVSS Vector v3.1

Vulnerable Products

red hat:red hat enterprise linux for nvidia 26 red hat:red hat enterprise linux 8 red hat:red hat enterprise linux 7 red hat:red hat enterprise linux 6 red hat:red hat enterprise linux 9 red hat:red hat enterprise linux 10