ReceiverApplication · Citrix
CVE-2019-11634
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 · uneditedCitrix Workspace App before 1904 for Windows has Incorrect Access Control.
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 confidenceCitrix Workspace App for Windows versions prior to 1904 contain an incorrect access control vulnerability. This flaw allows authenticated users to potentially access resources or perform operations outside their intended permissions boundaries, leading to privilege escalation or unauthorized data access.
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
ReceiverApplication
= 4.9
WorkspaceApplication
< 1904CVSS 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
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Identify Citrix Workspace App installationOpen Windows Control Panel > Programs and Features, or use PowerShell: Get-WmiObject -Class Win32_Product | Select-Object Name, VersionAffected if Citrix Workspace App is listed with a version lower than 1904
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Identify Citrix Receiver installationOpen Windows Control Panel > Programs and Features, or use PowerShell: Get-WmiObject -Class Win32_Product | Select-Object Name, VersionAffected if Citrix Receiver version 4.9 is installed
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Check version via application executableNavigate to the Citrix installation directory (typically C:\Program Files\Citrix\Citrix Workspace or C:\Program Files (x86)\Citrix\ICA Client), right-click the main executable (such as Workspace.exe, CitrixWorkspace.exe, or Receiver.exe), select Properties, and view the File Version on the Details tabAffected if The reported version is below 1904 for Workspace App or exactly 4.9 for Receiver
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Compare against affected version rangesReview the version numbers obtained from the above checks and compare: Citrix Workspace App versions prior to 1904 are affected; Citrix Receiver version 4.9 is affectedAffected if Installed version falls within: Citrix Workspace < 1904 OR Citrix Receiver = 4.9
The environment is affected if Citrix Workspace App for Windows version is lower than 1904, or if Citrix Receiver version 4.9 is installed, as these versions contain the incorrect access control 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.
dbcve · scoped1904
Update Citrix Workspace App to version 1904 or later to remediate the incorrect access control vulnerability.
Citrix Workspace App 1904 or later for Windows
- Verify the current version of Citrix Workspace App or Citrix Receiver installed on the Windows system
- Navigate to the official Citrix download page or use the built-in update mechanism
- Download Citrix Workspace App version 1904 or later for Windows
- Close any running Citrix applications
- Run the installer with appropriate administrative privileges
- Follow the on-screen installation prompts
- Restart the system if prompted
- Verify the installed version is 1904 or later
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Receiver
Exploited in the wild — priority engagement
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,424.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-11634 — 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-2019-11634 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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