What is CVE-2026-58611?

CVE-2026-58611 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Xbox Gaming Services Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-58611 cover?

CVE-2026-58611 covers the following CVE IDs: CVE-2026-58611. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-58611?

CVE-2026-58611 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-58611?

CVE-2026-58611 affects 1 product, including: Xbox Gaming Services.

CVE-2026-58611HighCVSS 7.8

Xbox Gaming Services Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

September 11, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-58611 →

📋 Description

Improper authorization in XBox Gaming Services allows an authorized attacker to elevate privileges locally.

🎯 Affected products1

Xbox Gaming Services

✅ Remediation

KBStore (Security Update) — fixed build 37.114.10001.0

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58611
patchhttps://apps.microsoft.com/detail/9mwpm2cqnlhn?hl=en-us&gl=US&ocid=pdpshare