Microsoft November 2026 patches fix 1095 flaws, one exploited
Only CVE-2026-124194, an Outlook spoofing bug scored 6.5, is exploited; 48 of 64 critical issues are remote code execution.
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CVE-2026-113856
Local privilege escalation via heap overflow in Windows Hyper-V
- CVSS 3.1
- 7.8 high
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
A heap-based buffer overflow in Windows Hyper-V lets an already authorized attacker elevate privileges. The flaw is triggered locally, needs low privileges and no user interaction, and is difficult to exploit. Successful exploitation yields high confidentiality, integrity, and availability impact, with a changed scope. Microsoft has not listed affected builds.
What to do: Apply Microsoft's update for CVE-2026-113856. No workaround is stated.
| Product | Affected |
|---|---|
| Microsoft Windows Hyper-V | — |
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
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
- Weakness
- CWE-122
- Vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H