Windows updates tighten NTLM signing in phased enforcement
Microsoft is adding phased NTLM signing enforcement in Windows after the latest Patch Tuesday updates. The change comes alongside protections against CVE-2026-118737, a critical severity vulnerability tied to remote code execution on a network through improper verification of a cryptographic signature in Windows Remote Procedure Call Runtime. NTLM changes in Windows Microsoft has been phasing out NTLM authentication in Windows in favor of Kerberos-based alternatives over the past few years.…