CVE-2026-70177 Microsoft Windows Search Component Elevation of Privilege Vulnerability

High 7.8 Published Updated

An authorized local attacker can exploit a numeric truncation error in the Windows Search Component to elevate privileges.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-70177?

CVE-2026-70177 is a high-severity vulnerability in Microsoft Windows 10 1607, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Numeric truncation error in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Weakness: CWE-20, CWE-197

Which versions are affected by CVE-2026-70177?

It affects 14 products.

Products include Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2 and 8 more.

How do I fix CVE-2026-70177?

No fix has been published for CVE-2026-70177 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-70177 being exploited?

There is no known exploitation of CVE-2026-70177 in the wild and no public exploit code.

All Microsoft Windows 10 1607 vulnerabilities

Sources

Also known as GHSA-q6wj-gx3r-9hcm.

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