SB2026032590 - Local information disclosure in Citrix XenServer
Published: March 25, 2026
Security Bulletin ID
SB2026032590
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Resource management error (CVE-ID: CVE-2026-4397)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper management of internal resources on hosts with limited available memory. A local user can access data of a previously terminated VM when starting a new VM.
Remediation
Install update from vendor's website.