SB2025070285 - Denial of service in Citrix XenServer
Published: July 2, 2025
Security Bulletin ID
SB2025070285
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper error handling (CVE-ID: CVE-2025-27465)
CWE-ID: CWE-388 - Error Handling
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a local guest to crash the hypervisor.
The vulnerability exists die to incorrect stubs exception handling for flags recovery. A malicious guest can force the hypervisor to crash.
Remediation
Install update from vendor's website.