CVE-2026-70579 Windows Mobile Broadband Information Disclosure Vulnerability
An out-of-bounds read in Windows Mobile Broadband allows attackers to disclose sensitive information over the network.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-70579?
CVE-2026-70579 is a high-severity vulnerability in Microsoft Windows 10 21h2, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Out-of-bounds read in Windows Mobile Broadband allows an unauthorized attacker to disclose information over a network.
Weakness: CWE-125
Which versions are affected by CVE-2026-70579?
It affects 6 products.
Products include Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1.
How do I fix CVE-2026-70579?
No fix has been published for CVE-2026-70579 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-70579 being exploited?
There is no known exploitation of CVE-2026-70579 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 21h2
- CVE-2025-21333 Microsoft Windows Hyper-V NT Kernel Integration VSP Heap-based Buffer Overflow
- CVE-2025-21334 Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free
- CVE-2025-21335 Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free
- CVE-2026-42904 Windows TCP/IP Elevation of Privilege Vulnerability
- CVE-2026-105733 Windows Hyper-V Remote Code Execution Vulnerability
Sources
Also known as GHSA-cc73-m23h-8xr8.