CVE-2007-1881
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 · uneditedUnspecified vulnerability in KLIF (klif.sys) in Kaspersky Anti-Virus, Anti-Virus for Workstations, and Anti-Virus for File Servers 6.0, and Internet Security 6.0 before Maintenance Pack 2 build 6.0.2.614 allows local users to gain Ring-0 privileges via unspecified vectors.
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 local privilege escalation vulnerability exists in the KLIF kernel driver (klif.sys) of Kaspersky Anti-Virus 6.0 and related products. The flaw allows an unprivileged local user to execute arbitrary code at Ring-0 (kernel) privilege level, achieving full system compromise through unspecified vectors.
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<= 6.0= 6.0<= 6.0.1.411CVSS 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
- Authentication
- Single
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:L/AC:L/Au:S/C:C/I:C/A:C
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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Verify Kaspersky product is installedCheck Program Files for Kaspersky Lab folder, or check Windows Registry key HKLM\SOFTWARE\KasperskyLab for installed productsAffected if No Kaspersky Anti-Virus or Internet Security product is found in the system, then the vulnerability does not apply
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Identify installed Kaspersky product versionOpen the Kaspersky application and check About/Support information, or check the version in the Windows Registry under the product's install keyAffected if The installed version is 6.0 or 6.0.1.411 (or any version <= 6.0.1.411)
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Locate the KLIF kernel driver (klif.sys)Search for klif.sys in the System32\drivers folder or the Kaspersky install directoryAffected if The driver file klif.sys exists on the system and is present in the drivers directory
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Confirm driver is loadedOpen a command prompt and run 'sc query klif' or check Device Manager for Kaspersky Filter driversAffected if The KLIF driver service exists and shows a Running state, indicating the vulnerable driver is active
If Kaspersky Anti-Virus or Internet Security version 6.0 or 6.0.1.411 is installed and the KLIF (klif.sys) driver is present and loaded, the system is vulnerable to local privilege escalation.
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 Kaspersky Maintenance Pack 2 build 6.0.2.614 or later to address the vulnerability. Until patched, limit local access to trusted users only as exploitation requires local system access.
- Consultation1.0 h
- Implementation1.0 h
- Testing1.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2007-1881 — 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-2007-1881 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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