CVE-2026-62889
Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution vulnerability
MSRC advisory August 11, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-62889
- Affected products
- Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution · Microsoft Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution · Microsoft
What happened
Double free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a network.
What it means for your business
Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution vulnerability (CVE-2026-62889) was added to Microsoft’s security update guidance. Double free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a network. If you need help checking exposure, call (864) 335-9223.
Sources
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