CVE-2006-6623
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 · uneditedSygate Personal Firewall 5.6.2808 relies on the Process Environment Block (PEB) to identify a process, which allows local users to bypass the product's controls on a process by spoofing the (1) ImagePathName, (2) CommandLine, and (3) WindowTitle fields in the PEB.
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 confidenceSygate Personal Firewall 5.6.2808 identifies processes for its security controls by reading fields from the Process Environment Block (PEB), specifically ImagePathName, CommandLine, and WindowTitle. Local users can manipulate these PEB fields to spoof process identity, allowing them to bypass the firewall's access controls and restrictions.
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= 7.5.431= 2.3.6.81= 3.0.8686= 3.0.23= 2.05p2= 5.6.2808CVSS 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
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:L/AC:L/Au:N/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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Check for Sygate Personal Firewall installationSearch for Sygate Personal Firewall in installed programs or check for SPF executable files on the systemAffected if Sygate Personal Firewall version 5.6.2808 is installed
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Check for Comodo Personal Firewall installationSearch for Comodo Personal Firewall in installed programs or check for CFP executable filesAffected if Comodo Personal Firewall version 2.3.6.81 is installed
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Check for AVG Antivirus Plus Firewall installationSearch for AVG Antivirus Plus Firewall in installed programsAffected if AVG Antivirus Plus Firewall version 7.5.431 is installed
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Check for Filseclab Personal Firewall installationSearch for Filseclab Personal Firewall in installed programsAffected if Filseclab Personal Firewall version 3.0.8686 is installed
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Check for Infoprocess Antihook installationSearch for Antihook in installed programsAffected if Infoprocess Antihook version 3.0.23 is installed
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Check for Soft4ever Look N Stop installationSearch for Look N Stop in installed programsAffected if Soft4ever Look N Stop version 2.05p2 is installed
The system is affected if any of these specific firewall products at exactly the listed versions are installed, as the vulnerability allows local users to spoof process identity via manipulated PEB fields to bypass security controls.
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 dataThis is a legacy, unsupported product (Sygate Personal Firewall was discontinued circa 2005-2006). Organizations should migrate to a supported modern firewall solution, as no vendor patch is available for this vulnerability.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2006-6623 — 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-2006-6623 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
- No spam, self-promotion, credentials, or personal data