CVE-2026-69337 Windows Registry Elevation of Privilege Vulnerability

High 7.1 Published Updated

An authorized attacker can elevate privileges via a double free vulnerability in the Windows Registry over a network.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-69337?

CVE-2026-69337 is a high-severity use after free vulnerability in Microsoft Windows 10 1607, published on 8 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Double free in Windows Registry allows an authorized attacker to elevate privileges over a network.

Weakness: CWE-415

Which versions are affected by CVE-2026-69337?

It affects 13 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 7 more.

How do I fix CVE-2026-69337?

No fix has been published for CVE-2026-69337 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-69337 being exploited?

There is no known exploitation of CVE-2026-69337 in the wild and no public exploit code.

All Microsoft Windows 10 1607 vulnerabilities

Sources

Also known as GHSA-r566-4rrr-j7qq.

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