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.
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CVE-2026-105501
Incorrect authorization in Windows Installer enables local privilege escalation
- CVSS 3.1
- 7.8 high
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
Incorrect authorization in Windows Installer lets an already authorized local user elevate privileges. No user interaction is required. Successful exploitation yields high impact to confidentiality, integrity, and availability on the affected Windows system. Microsoft has not listed affected builds or a fixed version.
What to do: Apply Microsoft's update for CVE-2026-105501. No fixed version or workaround is stated.
| Product | Affected |
|---|---|
| Microsoft Windows Installer | — |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
Incorrect authorization in Windows Installer allows an authorized attacker to elevate privileges locally.
- Weakness
- CWE-863
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H