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Findings

Vulnerability · CVE-2024-49138

Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability

Published Dec 10, 2024 · corrected/updated Jun 17, 2026 · Microsoft Windows · evidence confidence very high

Microsoft Windows Common Log File System (CLFS) driver contains a heap-based buffer overflow vulnerability that allows a local attacker to escalate privileges.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2024-49138 is a high public vulnerability record for Microsoft Windows. CISA lists it as known exploited. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether Microsoft Windows is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: microsoft/windows 10 1507; microsoft/windows 10 1607; microsoft/windows 10 1809; microsoft/windows 10 21h2. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 7.8, EPSS 26.2%. CISA lists it as known exploited. Weakness classes: CWE-122. Sources contributing to this record: cisa_kev, cve_org, epss, exploitdb. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Confirmed in CISA KEV since Dec 10, 2024. Listed in CISA KEV and VulnCheck KEV.

  • Patch and remediation

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Dec 31, 2024.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Technology hubs

Windows

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 10, 2024 · Catalog

    Detected

    Microsoft Windows Common Log File System (CLFS) driver contains a heap-based buffer overflow vulnerability that allows a local attacker to escalate privileges.

  2. Dec 10, 2024 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  3. Dec 31, 2024 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  4. Jun 17, 2026 · Catalog

    Updated

    Microsoft Windows Common Log File System (CLFS) driver contains a heap-based buffer overflow vulnerability that allows a local attacker to escalate privileges.

Affected

  • cpe microsoft/windows 10 1507version unspecified
  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows 10 1809version unspecified
  • cpe microsoft/windows 10 21h2version unspecified
  • vendor Microsoft Windowsversion unspecified

Sources

  • CISA KEVConfirmed exploitationCVE-2024-49138

    Microsoft Windows Common Log File System (CLFS) driver contains a heap-based buffer overflow vulnerability that allows a local attacker to escalate privileges.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2024-49138

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2024-49138

    30-day exploitation probability 26.2%

    first.org
  • Exploit DatabasePublic exploit reference52270

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • NIST NVDVulnerability recordCVE-2024-49138

    Windows Common Log File System Driver Elevation of Privilege Vulnerability

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2024-49138

    Microsoft Windows Common Log File System (CLFS) driver contains a heap-based buffer overflow vulnerability that allows a local attacker to escalate privileges.

    vulncheck.com

References