schannel vulnerability

The schannel vulnerability tag covers Microsoft’s July 14, 2026 security update addressing CVE-2026-56186, a High-severity information disclosure flaw in Windows Secure Channel (Schannel). The vulnerability involves an out-of-bounds read in the Windows TLS/SSL implementation and may allow an authorized attacker to disclose information over a network. Coverage focuses on the affected Windows security issue, its network attack vector, and the absence of current reports of exploitation in the wild. Administrators can use this tag to follow guidance on deploying the appropriate July cumulative update for supported Windows releases and verifying that devices have installed the corrected build.