CVE-2016-9485
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 · uneditedOn Windows endpoints, the SecureConnector agent must run under the local SYSTEM account or another administrator account in order to enable full functionality of the agent. The typical configuration is for the agent to run as a Windows service under the local SYSTEM account. The SecureConnector agent runs various plugin scripts and executables on the endpoint in order to gather and report information about the host to the CounterACT management appliance. The SecureConnector agent downloads these scripts and executables as needed from the CounterACT management appliance and runs them on the endpoint. The SecureConnector agent fails to set any permissions on downloaded file objects. This allows a malicious user to take ownership of any of these files and make modifications to it, regardless of where the files are saved. These files are then executed under SYSTEM privileges. A malicious unprivileged user can overwrite these executable files with malicious code before the SecureConnector agent executes them, causing the malicious code to be run under the SYSTEM account.
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 confidenceThe SecureConnector agent for Windows downloads scripts and executables from a CounterACT management appliance but fails to set any permissions on these downloaded files. This allows an unprivileged malicious user to take ownership of these files and inject malicious code. When the agent executes these modified files, the code runs with SYSTEM-level privileges, resulting in privilege escalation and arbitrary code execution.
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 dataall 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/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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Confirm SecureConnector installationOpen Windows Services console (services.msc) and look for 'SecureConnector' service, or check Programs and Features for Forescout SecureConnector entryAffected if SecureConnector is installed on the system
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Locate SecureConnector download directoriesInspect the SecureConnector installation directory (typically C:\Program Files\Forescout\SecureConnector or C:\Program Files (x86)\Forescout\SecureConnector) and look for subdirectories used to store downloaded scripts and executablesAffected if Download directories exist and contain scripts or executables
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Verify file permissions on download directoriesRight-click the download directories, go to Properties > Security tab, and check which users and groups have Write or Modify permissions on these foldersAffected if Unprivileged users (non-administrators) have Write or Modify permissions to the download directories
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Test ownership takeover capabilityAs a standard (non-admin) user, attempt to take ownership of files in the SecureConnector download directories using takeown command or verify via icacls that standard users can modify executable filesAffected if Standard users can take ownership or modify executables in the download directories
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Check for file integrity monitoringReview if any file integrity monitoring (FIM) solution is deployed to detect unauthorized modifications to the SecureConnector download directoriesAffected if No FIM or monitoring is in place for the SecureConnector download directories and files
If Forescout SecureConnector is installed and unprivileged users can modify or take ownership of files in its download directories, the system is vulnerable to CVE-2016-9485 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 vendor patch when available. In the interim, restrict file system access to the download directories used by SecureConnector and implement file integrity monitoring to detect unauthorized modifications to downloaded executables. Consider network segmentation to limit exposure.
- Consultation8.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2016-9485 — 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-2016-9485 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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