---
id: "CVE-2023-36424"
kind: "vulnerability"
aliases: ["CVE-2023-36424"]
title: "Windows Common Log File System Driver Elevation of Privilege Vulnerability"
severity: "high"
cvss: 7.8
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Microsoft Windows", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "microsoft windows 10 1507", "fixed": ["10.0.10240.20308"], "affected": "< 10.0.10240.20308", "ecosystem": "vendor"}, {"name": "microsoft windows 10 1607", "fixed": ["10.0.14393.6452"], "affected": "< 10.0.14393.6452", "ecosystem": "vendor"}, {"name": "microsoft windows 10 1809", "fixed": ["10.0.17763.5122"], "affected": "< 10.0.17763.5122", "ecosystem": "vendor"}, {"name": "microsoft windows 10 21h2", "fixed": ["10.0.19044.3693"], "affected": "< 10.0.19044.3693", "ecosystem": "vendor"}, {"name": "microsoft windows 10 22h2", "fixed": ["10.0.19045.3693"], "affected": "< 10.0.19045.3693", "ecosystem": "vendor"}, {"name": "microsoft windows 11 21h2", "fixed": ["10.0.22000.2600"], "affected": "< 10.0.22000.2600", "ecosystem": "vendor"}, {"name": "microsoft windows 11 22h2", "fixed": ["10.0.22621.2715"], "affected": "< 10.0.22621.2715", "ecosystem": "vendor"}, {"name": "microsoft windows 11 23h2", "fixed": ["10.0.22631.2715"], "affected": "< 10.0.22631.2715", "ecosystem": "vendor"}, {"name": "microsoft windows server 2008", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "microsoft windows server 2008", "fixed": [], "affected": "= r2", "ecosystem": "vendor"}, {"name": "microsoft windows server 2012", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "microsoft windows server 2012", "fixed": [], "affected": "= r2", "ecosystem": "vendor"}, {"name": "microsoft windows server 2016", "fixed": ["10.0.14393.6452"], "affected": "< 10.0.14393.6452", "ecosystem": "vendor"}, {"name": "microsoft windows server 2019", "fixed": ["10.0.17763.5122"], "affected": "< 10.0.17763.5122", "ecosystem": "vendor"}, {"name": "microsoft windows server 2022", "fixed": ["10.0.20348.2091"], "affected": "< 10.0.20348.2091", "ecosystem": "vendor"}, {"name": "microsoft windows server 2022 23h2", "fixed": ["10.0.25398.531"], "affected": "< 10.0.25398.531", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "infrastructure", "self-hosted", "windows"]
not_affected_if: ["fully-patched-windows"]
published_at: "2023-11-14T18:15:45+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T23:44:51+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-36424", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-36424", "first_seen_at": "2026-10-23T23:44:51+00:00"}]
---

# Windows Common Log File System Driver Elevation of Privilege Vulnerability

The Windows Common Log File System (CLFS) driver reads memory past the end of a buffer. A local attacker who can run code on the machine can use this to escalate to higher privileges.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Microsoft Windows affected ? fixed ?
- vendor:microsoft windows 10 1507 affected < 10.0.10240.20308 fixed 10.0.10240.20308
- vendor:microsoft windows 10 1607 affected < 10.0.14393.6452 fixed 10.0.14393.6452
- vendor:microsoft windows 10 1809 affected < 10.0.17763.5122 fixed 10.0.17763.5122
- vendor:microsoft windows 10 21h2 affected < 10.0.19044.3693 fixed 10.0.19044.3693
- vendor:microsoft windows 10 22h2 affected < 10.0.19045.3693 fixed 10.0.19045.3693
- vendor:microsoft windows 11 21h2 affected < 10.0.22000.2600 fixed 10.0.22000.2600
- vendor:microsoft windows 11 22h2 affected < 10.0.22621.2715 fixed 10.0.22621.2715
- vendor:microsoft windows 11 23h2 affected < 10.0.22631.2715 fixed 10.0.22631.2715
- vendor:microsoft windows server 2008 affected ? fixed ?
- vendor:microsoft windows server 2008 affected = r2 fixed ?
- vendor:microsoft windows server 2012 affected ? fixed ?
- vendor:microsoft windows server 2012 affected = r2 fixed ?
- vendor:microsoft windows server 2016 affected < 10.0.14393.6452 fixed 10.0.14393.6452
- vendor:microsoft windows server 2019 affected < 10.0.17763.5122 fixed 10.0.17763.5122
- vendor:microsoft windows server 2022 affected < 10.0.20348.2091 fixed 10.0.20348.2091
- vendor:microsoft windows server 2022 23h2 affected < 10.0.25398.531 fixed 10.0.25398.531

## How to check

Check Windows Update history for the Microsoft security update that fixes CVE-2023-36424 (July 2023 Patch Tuesday or later); unknown for exact KB number in sources.

## Fix

Install the Microsoft security update that fixes CVE-2023-36424 (apply mitigations per vendor instructions if the patch is unavailable).

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-36424
- 2026-10-23T23:44:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2023-36424

## From the sources

Microsoft Windows Common Log File System Driver contains an out-of-bounds read vulnerability that could allow a threat actor for privileges escalation

CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_