CVE-2025-1055
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 · uneditedA vulnerability in the K7RKScan.sys driver, part of the K7 Security Anti-Malware suite, allows a local low-privilege user to send crafted IOCTL requests to terminate a wide range of processes running with administrative or system-level privileges, with the exception of those inherently protected by the operating system. This flaw stems from missing access control in the driver's IOCTL handler, enabling unprivileged users to perform privileged actions in kernel space. Successful exploitation can lead to denial of service by disrupting critical services or privileged applications.
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 · moderate confidenceThe K7RKScan.sys kernel driver lacks proper access control validation in its IOCTL request handler, allowing any local user to send crafted IOCTL codes that can terminate arbitrary processes running with elevated privileges. This is a local privilege escalation vulnerability where an unprivileged user can cause denial of service by killing critical administrative or system-level processes.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/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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Locate the K7RKScan.sys driver fileSearch for the driver file in system directories: Run 'dir /s C:\Windows\System32\drivers\K7RKScan.sys' or check 'C:\Windows\System32\drivers\K7RKScan.sys' directlyAffected if The driver file exists on the system
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Retrieve the driver file versionRight-click the K7RKScan.sys file, select Properties, then go to the Details tab to view the File Version, or run 'powershell (Get-Item "C:\Windows\System32\drivers\K7RKScan.sys").VersionInfo'Affected if A version number is returned (driver is installed); compare against any vendor-published fixed version when available
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Check if the driver is currently loadedOpen an elevated command prompt and run 'sc query K7RKScan' or 'driverquery /v | findstr K7RKScan' to query the driver service statusAffected if The service state shows as RUNNING or the driver appears in the loaded driver list
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Verify driver file integrity and signatureRight-click the driver file, select Properties, then go to the Digital Signatures tab to verify the signature is valid and from K7 SecurityAffected if The driver is signed by K7 Security but lacks a recent patch, or shows as unsigned
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Audit local user privilegesCheck which users have access to interact with the driver by reviewing 'icacls C:\Windows\System32\drivers\K7RKScan.sys' outputAffected if Non-admin or unprivileged users have read or execute access to the driver file
If the K7RKScan.sys driver is present on the system and is loaded or loadable by unprivileged local users, the environment is affected by this vulnerability.
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.
From vendor dataApply the vendor patch from K7 Security when available. In the interim, restrict local user access to systems with this driver installed and monitor for suspicious process termination events.
- Consultation4.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-1055 — 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-2025-1055 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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- 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
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