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CVE-2025-32706

Windows Common Log File System Driver Elevation of Privilege Vulnerability

HIGH
7.8
CVSS Score
Published: May 13, 2025 at 04:58 PM UTC
Updated: June 17, 2026 at 09:12 AM UTC
16 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2012

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Severity
HIGH7.8
Exploitation
CISA KEV
Exploit prediction
EPSS 2%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score2.3%

EPSS (Exploit Prediction Scoring System) estimates a 2.3% chance this CVE is exploited in the wild within the next 30 days — higher than 84% 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 a heap-based buffer overflow vulnerability that allows an authorized attacker to elevate privileges locally.

Required Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Ransomware Use
Unknown
Added to KEV
May 13, 2025
Remediation Due
Jun 3, 2025
514 days overdue
Notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-32706
https://nvd.nist.gov/vuln/detail/CVE-2025-32706

Description

Improper input validation in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

Affected

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

Windows 10 1507· Microsoft
95%
v < 10.0.10240.2101410.0.10240.0 ≤ v < 10.0.10240.2101410.0.10240.0
Affected range stops below 10.0.10240.21014, so it looks safe — our inference, not a vendor statement
Windows 10 1607· Microsoft
95%
v < 10.0.14393.806610.0.14393.0 ≤ v < 10.0.14393.806610.0.14393.0
Affected range stops below 10.0.14393.8066, so it looks safe — our inference, not a vendor statement
Windows 10 1809· Microsoft
95%
v < 10.0.17763.731410.0.17763.0 ≤ v < 10.0.17763.731410.0.17763.0
Affected range stops below 10.0.17763.7314, so it looks safe — our inference, not a vendor statement
Windows 10 21H2· Microsoft
95%
v < 10.0.19044.585410.0.19044.0 ≤ v < 10.0.19044.585410.0.19044.0
Affected range stops below 10.0.19044.5854, so it looks safe — our inference, not a vendor statement
Windows 10 22H2· Microsoft
95%
v < 10.0.19045.585410.0.19045.0 ≤ v < 10.0.19045.585410.0.19045.0
Affected range stops below 10.0.19045.5854, so it looks safe — our inference, not a vendor statement
Windows 11 22H2· Microsoft
95%
v < 10.0.22621.533510.0.22621.0 ≤ v < 10.0.22621.533510.0.22621.0
Affected range stops below 10.0.22621.5335, so it looks safe — our inference, not a vendor statement
Windows 11 23H2· Microsoft
95%
v < 10.0.22631.533510.0.22631.0 ≤ v < 10.0.22631.533510.0.22631.0
Affected range stops below 10.0.22631.5335, so it looks safe — our inference, not a vendor statement
Windows 11 24H2· Microsoft
95%
v < 10.0.26100.398110.0.26100.0 ≤ v < 10.0.26100.406110.0.26100.0
Affected range stops below 10.0.26100.3981, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.26100.4061, so it looks safe — our inference, not a vendor statement
Windows Server 2008· Microsoft
95%
6.0.6003.0 ≤ v < 6.0.6003.232796.1.7601.0 ≤ v < 6.1.7601.277296.0.6003.06.1.7601.0r2 sp1sp2
Affected range stops below 6.0.6003.23279, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.7601.27729, so it looks safe — our inference, not a vendor statement
Windows Server 2012· Microsoft
95%
6.2.9200.0 ≤ v < 6.2.9200.254756.3.9600.0 ≤ v < 6.3.9600.225776.2.9200.06.3.9600.0r2
Affected range stops below 6.2.9200.25475, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.3.9600.22577, so it looks safe — our inference, not a vendor statement

References (4)

Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-32706
ExploitThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.vicarius.io/vsociety/posts/cve-2025-32706-detection-script-elevation-of-privilege-vulnerability-in-microsoft-windows-common-log-file-system-driver
ExploitMitigationThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.vicarius.io/vsociety/posts/cve-2025-32706-mitigation-script-elevation-of-privilege-vulnerability-in-microsoft-windows-common-log-file-system-driver
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-32706

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-20NVD-CWE-noinfo

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