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CISA KEV·Added 2024-12-10 — agencies required to remediate by 2024-12-31

CVE-2024-49138

HIGH

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Published
Dec 12, 2024
Updated
Jun 17, 2026
Affected
0 pkgs
Patched
None yet
Exploits
None indexed

EPSS Exploitation Probability

via FIRST.org ↗
25.4%probability of exploitation in next 30 days
Moderate Risk98th percentile0.00%
6.43%37.6%68.8%100.0%88.7%25.4%Jan 26May 26Jul 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Affected Products

15 products · 28 configurations
OS
windows 10 21h2microsoft
< 10.0.19044.5247
range
OS
windows 10 22h2microsoft
< 10.0.19045.5247
range
OS
windows 10 1507microsoft
< 10.0.10240.20857
range
OS
windows 10 1607microsoft
< 10.0.14393.7606
range
OS
windows 10 1809microsoft
< 10.0.17763.6659
range
OS
windows 11 22h2microsoft
< 10.0.22621.4602
range

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every microsoft windows 10 21h2 deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Fix

    Apply the microsoft windows 10 21h2 security patch or hotfix for CVE-2024-49138 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2024-49138 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2024-49138. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Windows Common Log File System Driver Elevation of Privilege Vulnerability
O3 Security · Runtime Protection

Is CVE-2024-49138 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2024-49138 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.