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CVE-2023-28252

Windows Common Log File System Driver Elevation of Privilege Vulnerability

HIGH
7.8
CVSS Score
Published: April 11, 2023 at 07:13 PM UTC
Updated: June 17, 2026 at 05:47 AM UTC
13 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2012

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Severity
HIGH7.8
Exploitation
CISA KEV
Exploit prediction
EPSS 49%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score48.9%

EPSS (Exploit Prediction Scoring System) estimates a 48.9% chance this CVE is exploited in the wild within the next 30 days — higher than 99% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Microsoft Windows Common Log File System (CLFS) driver contains an unspecified vulnerability that allows for privilege escalation.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Known
Added to KEV
Apr 11, 2023
Remediation Due
May 2, 2023
1275 days overdue
Notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-28252
https://nvd.nist.gov/vuln/detail/CVE-2023-28252

Description

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Windows 10 1507· Microsoft
95%
v < 10.0.10240.1986910.0.10240.0 ≤ v < 10.0.10240.1986910.0.10240.0
Affected range stops below 10.0.10240.19869, so it looks safe — our inference, not a vendor statement
Windows 10 1607· Microsoft
95%
v < 10.0.14393.585010.0.14393.0 ≤ v < 10.0.14393.585010.0.14393.0
Affected range stops below 10.0.14393.5850, so it looks safe — our inference, not a vendor statement
Windows 10 1809· Microsoft
95%
v < 10.0.17763.425210.0.0 ≤ v < 10.0.17763.425210.0.17763.0 ≤ v < 10.0.17763.425210.0.010.0.17763.0
Affected range stops below 10.0.17763.4252, so it looks safe — our inference, not a vendor statement
Windows 10 20H2· Microsoft
95%
v < 10.0.19042.284610.0.0 ≤ v < 10.0.19042.284610.0.0
Affected range stops below 10.0.19042.2846, so it looks safe — our inference, not a vendor statement
Windows 10 21H2· Microsoft
95%
v < 10.0.19044.284610.0.19043.0 ≤ v < 10.0.19044.284610.0.19043.0
Affected range stops below 10.0.19044.2846, so it looks safe — our inference, not a vendor statement
Windows 10 22H2· Microsoft
95%
v < 10.0.19045.284610.0.19045.0 ≤ v < 10.0.19045.284610.0.19045.0
Affected range stops below 10.0.19045.2846, so it looks safe — our inference, not a vendor statement
Windows 11 21H2· Microsoft
95%
v < 10.0.22000.181710.0.0 ≤ v < 10.0.22000.181710.0.0
Affected range stops below 10.0.22000.1817, so it looks safe — our inference, not a vendor statement
Windows 11 22H2· Microsoft
95%
v < 10.0.22621.155510.0.22621.0 ≤ v < 10.0.22621.155510.0.22621.0
Affected range stops below 10.0.22621.1555, so it looks safe — our inference, not a vendor statement
Windows Server 2008· Microsoft
95%
6.0.6003.0 ≤ v < 6.0.6003.220156.1.7601.0 ≤ v < 6.1.7601.264666.0.6003.06.1.7601.0r2 sp1sp2
Affected range stops below 6.0.6003.22015, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.7601.26466, so it looks safe — our inference, not a vendor statement
Windows Server 2012· Microsoft
95%
6.2.9200.0 ≤ v < 6.2.9200.242166.3.9600.0 ≤ v < 6.3.9600.209196.2.9200.06.3.9600.0r2
Affected range stops below 6.2.9200.24216, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.3.9600.20919, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28252
ExploitThird Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
http://packetstormsecurity.com/files/174668/Windows-Common-Log-File-System-Driver-clfs.sys-Privilege-Escalation.html
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28252

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-122CWE-787

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