CVE-2026-69303 Push Message Routing Service Information Disclosure Vulnerability
An authorized local attacker can exploit an out-of-bounds read in the Push Message Routing Service to disclose sensitive information.
- 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-2026-69303?
CVE-2026-69303 is a medium-severity vulnerability in Microsoft Windows 10 1607, published on 8 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Out-of-bounds read in Push Message Routing Service allows an authorized attacker to disclose information locally.
Which versions are affected by CVE-2026-69303?
It affects 12 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 6 more.
How do I fix CVE-2026-69303?
No fix has been published for CVE-2026-69303 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-69303 being exploited?
There is no known exploitation of CVE-2026-69303 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1607
- CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free
- CVE-2026-21510 Microsoft Windows Shell Protection Mechanism Failure
- CVE-2026-21513 Microsoft MSHTML Framework Protection Mechanism Failure
- CVE-2023-32049 Microsoft Windows Defender SmartScreen Security Feature Bypass
- CVE-2023-29360 Microsoft Streaming Service Untrusted Pointer Dereference
Sources
Also known as GHSA-fvfr-g3fw-7v7j.