CVE-2025-60709
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedOut-of-bounds read in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA privilege escalation vulnerability exists in the Windows Common Log File System (CLFS) driver due to an out-of-bounds read. An authenticated local attacker can exploit this to elevate privileges from their current user level to higher system or administrative privileges.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 10.0.14393.8594< 10.0.17763.8027< 10.0.19044.6575< 10.0.19045.6575< 10.0.22631.6199< 10.0.26100.7092< 10.0.26200.7092all versions= r2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check Windows build versionOpen Command Prompt or PowerShell and run 'winver' or 'systeminfo | findstr /C:"OS Version"' to obtain the full build numberAffected if The build number is lower than the threshold for your Windows version (e.g., for Windows 10 22h2, below 10.0.19045.6575)
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Verify CLFS driver presenceCheck that the Common Log File System driver (clfs.sys) exists in the system by running 'sc query clfs' or checking C:\Windows\System32\drivers\clfs.sysAffected if The clfs.sys driver is present on the system (which is the default state for affected Windows installations)
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Confirm user contextIdentify if there are any local user accounts with non-admin privileges on the system by running 'net user' or checking Local Users and Groups (lusrmgr.msc)Affected if Local authenticated users exist who do not have administrator or SYSTEM privileges, as these are the users who could exploit the vulnerability to escalate privileges
Your system is affected if it runs a Windows version within the listed ranges and has a build number lower than the specified threshold, and untrusted local users have access to log in.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped10.0.14393.859410.0.17763.802710.0.19044.6575
Apply the Microsoft security update for CVE-2025-60709 via Windows Update or WSUS to patched systems. Prioritize workstations and servers where untrusted users have local access.
Apply the appropriate Windows Security Update for your version (e.g., KB for CVE-2025-60709)
- Open Windows Update Settings (Settings > Update & Security > Windows Update)
- Click 'Check for updates' to download and install the latest security updates
- Restart the system if prompted to complete the installation
- Verify the update was installed by checking Windows Update history for the KB corresponding to this CVE
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,304.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-60709 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-60709 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data