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CVE-2026-58643ImportantRevised 12 Aug

Windows Admin Center Spoofing Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improper neutralization of input during web page generation ('cross-site scripting') in Windows Admin Center allows an unauthorized attacker to perform spoofing over a network.

Severity
Important
CVSS base score
Not published
Impact
Spoofing
EPSS, next 30 days
0.4%Higher than 33% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
Exploitability
Not assessed
Publicly disclosed
No
Customer action
Required: apply the update
Component
Windows Admin Center
Weakness
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Issued by
Microsoft
Published
16 Jul 2026 · July 2026
Last revised
12 Aug 2026Corrected Build Number in the Security Updates table. This is an informational change only.

Updates that fix it

0 KBs

No KB listed

MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.

Affected products

Windows
1 affected product
  • Windows Admin Center
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