November 2026 Patch Tuesday lists dozens of Microsoft flaws
The excerpt lists 57 CVEs, including CVSS 9.8 remote code execution bugs rated exploitation less likely.
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CVE-2026-122173
Heap buffer overflow in Microsoft HID Parser Library (physical)
- CVSS 3.1
- 6.8 medium
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
A heap-based buffer overflow in Microsoft’s HID Parser Library lets an unauthorized attacker elevate privileges. Triggering it requires physical access; no account or user interaction is needed. Successful exploitation yields high impact on confidentiality, integrity, and availability. Microsoft has not listed affected builds or products beyond the library.
What to do: Microsoft has not listed a fixed version or workaround for CVE-2026-122173.
| Product | Affected |
|---|---|
| Microsoft HID Parser Library | — |
Estimated exposure
nicheNo 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 HID Parser Library allows an unauthorized attacker to elevate privileges with a physical attack.
- Weakness
- CWE-122
- Vector
- CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In the news
2 storiesMicrosoft November 2026 Patch Tuesday covers dozens of Windows flaws
The visible Rapid7 list includes several 9.8 remote code execution bugs; each entry is marked not publicly disclosed.
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