SB2026090904 - Privilege escalation in Microsoft Xbox Gaming Services
Published: September 9, 2026
Security Bulletin ID
SB2026090904
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Authorization (CVE-ID: CVE-2026-58611)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper authorization in XBox Gaming Services, which leads to security restrictions bypass and privilege escalation.
Remediation
Install update from vendor's website.