Trust AgentApplication · Cisco
CVE-2007-1800
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 · uneditedCisco Secure ACS does not require authentication when Cisco Trust Agent (CTA) transmits posture information, which might allow remote attackers to gain network access via a spoofed Network Endpoint Assessment posture, aka "NACATTACK." NOTE: this attack might be limited to authenticated users and devices.
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 confidenceCisco Secure ACS fails to require authentication when Cisco Trust Agent transmits posture information, allowing remote attackers to spoof Network Endpoint Assessment and gain unauthorized network access. This is an authentication bypass in the NAC (Network Access Control) subsystem.
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
Trust AgentApplication
all versionsCVSS 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
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:N/C:P/I:P/A:P
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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Identify Cisco Secure ACS deploymentInventory your network infrastructure devices and servers to determine if Cisco Secure ACS (Access Control Server) is installed and running. Check for ACS services, processes, or associated management interfaces.Affected if Cisco Secure ACS is present in the environment and handling NAC communications
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Identify Cisco Trust Agent deploymentScan endpoint systems for the presence of Cisco Trust Agent software. This may appear as a system service, installed application, or background process related to Cisco NAC.Affected if Cisco Trust Agent is installed on any systems in the network
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Verify NAC posture assessment is enabledCheck the Cisco Secure ACS configuration to determine if Network Access Control (NAC) or Posture Assessment features are active. Look for settings related to posture validation, health checks, or endpoint assessment.Affected if NAC posture assessment is enabled on the ACS server
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Confirm ACS accepts unauthenticated posture trafficExamine the Cisco Secure ACS authentication settings for posture communications. Specifically check whether the ACS is configured to validate authentication credentials from Cisco Trust Agent before accepting posture information.Affected if ACS is configured to accept posture information without requiring valid authentication tokens
You are affected if Cisco Secure ACS is deployed alongside Cisco Trust Agent with NAC posture assessment enabled and the ACS is not validating authentication on incoming posture messages.
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 dataImplement proper authentication requirements for all Cisco Trust Agent posture communications and consider additional validation/monitoring of posture assessment messages to detect spoofing attempts.
Fix this in Trust Agent
Scoped from the published advisory
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $9,504.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2007-1800 — 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-2007-1800 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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- Version or environment caveats, and links to real fixes
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