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-2026-114165
Heap buffer overflow in Windows Codecs Library
- CVSS 3.1
- 7.8 high
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
A heap-based buffer overflow in the Microsoft Windows Codecs Library lets an unauthorized attacker run code locally. No privileges are required, but the victim must interact with attacker-controlled content. Successful exploitation can give full control of confidentiality, integrity, and availability on the affected system. Microsoft has not listed affected builds.
What to do: Apply Microsoft's update for CVE-2026-114165. No workaround is stated.
| Product | Affected |
|---|---|
| Microsoft Windows Codecs Library | — |
Estimated exposure
largeWindows systems; local interaction required — Codecs Library ships with Windows; local access and user interaction limit reachable systems.
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 Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.
- Weakness
- CWE-122
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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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