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

CVE-2024-49138

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

Windows Common Log File System Driver Elevation of Privilege Vulnerability.

HIGH · CVSS 7.8 ⚠ CISA KEV EPSS 0.86946
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

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

⬡

Weakness Classification

CWE-122Heap-based Buffer Overflow
▤

Affected Products & Versions

15
microsoft windows 10 1507< 10.0.10240.20857
microsoft windows 10 1607< 10.0.14393.7606
microsoft windows 10 1809< 10.0.17763.6659
microsoft windows 10 21h2< 10.0.19044.5247
microsoft windows 10 22h2< 10.0.19045.5247
microsoft windows 11 22h2< 10.0.22621.4602
microsoft windows 11 23h2< 10.0.22631.4602
microsoft windows 11 24h2< 10.0.26100.2605
⚠

Public Exploits & PoCs

3
localMicrosoft Windows 11 23h2 - CLFS.sys Elevation of Privilege2025-04-22
pocpacketstorm.news · 190585packetstorm.news
pocwww.exploit-db.com · 52270www.exploit-db.com
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Dec 2024 · 02:04 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

2
msrcCVE-2024-49138Elevation of Privilege
cisaKEV-CVE-2024-49138
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-49138US Government Resource
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