CVE-2024-49088

SYSTEM privilege escalation via CLFS buffer over-read

Published Dec 10, 2024 · Updated Jun 9, 2026

Buffer over-read in the Microsoft Windows Common Log File System driver allows local users with low privileges to gain SYSTEM access. Microsoft identifies the flaw as a buffer over-read but has not disclosed the affected function, buffer source, or malformed input. Exploitation requires local low-privilege access, needs no user interaction, and grants control at SYSTEM privilege.

CVSS severity7.8
High
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer over-read in the Microsoft Windows Common Log File System driver allows local users with low privileges to gain SYSTEM access. Microsoft identifies the flaw as a buffer over-read but has not disclosed the affected function, buffer source, or malformed input. Exploitation requires local low-privilege access, needs no user interaction, and grants control at SYSTEM privilege.

The record

CVE
CVE-2024-49088
Published
Dec 10, 2024
Updated
Jun 9, 2026
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-126, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.10240.0 <10.0.10240.20857

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.20857
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.6659
Microsoft · Windows Server 2025 (Server Core installation)version=10.0.26100.0 <10.0.26100.2605
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.7606
Microsoft · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.2605
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.25222
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.25222
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.5247
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1308
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.7606
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.4602
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.27467
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.27467
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.5247
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.22318
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.6659
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.4602
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.4602
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.7606
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.23016
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.2966
Microsoft · Windows Server 2025version=10.0.26100.0 <10.0.26100.2605
Microsoft · Windows 10 Version 1809version=10.0.17763.0 <10.0.17763.6659
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.22318
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.23016

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-126Buffer Over-read
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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