Microsoft November 2026 Patch Tuesday fixes 1093 CVEs, one exploited
Outlook spoofing CVE-2026-124194, used as a zero-day, leaks NTLMv2 hashes when a crafted Office file is opened.
Local privilege escalation in Windows Telephony Service
Windows Telephony Service is missing authentication on a critical function. An attacker who is already signed in locally with low privileges can invoke that function and elevate privileges, with no user interaction. The result is higher privileges on the local system. Microsoft has not listed affected builds or a fixed version.
What to do: Apply Microsoft's update for CVE-2026-119886. No fixed version or workaround is stated.
| Product | Affected |
|---|---|
| Microsoft Windows Telephony Service | — |
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Missing authentication for critical function in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
Outlook spoofing CVE-2026-124194, used as a zero-day, leaks NTLMv2 hashes when a crafted Office file is opened.
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