dbcve.org
Gateway Plug InApplication · Citrix

CVE-2022-21827

HIGH · 7.1 CVSS v3.1 Published 2022-05-26
Fix available
A fix is available. Upgrade to 21.9.1.2 or later.
See remediation →
73/100
Remediation priority · Elevated
Zero-click

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 · unedited
An improper privilege vulnerability has been discovered in Citrix Gateway Plug-in for Windows (Citrix Secure Access for Windows) <21.9.1.2 what could allow an attacker who has gained local access to a computer with Citrix Gateway Plug-in installed, to corrupt or delete files as SYSTEM.

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 confidence

An improper privilege vulnerability in Citrix Gateway Plug-in for Windows versions prior to 21.9.1.2 allows a local attacker to escalate privileges to SYSTEM level, enabling file corruption or deletion. The attacker requires local access to a machine with the vulnerable plugin installed.

MitigationUpgrade Citrix Gateway Plug-in for Windows to version 21.9.1.2 or later to remediate this improper privilege vulnerability.

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
Gateway Plug InApplication
Affected:< 21.9.1.2

CVSS 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
None
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Verify Citrix Gateway Plug-in for Windows is installed
    Check installed programs via Windows Settings > Apps > Apps & features, or run 'Get-WmiObject -Class Win32_Product' or review registry key HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall for an entry named 'Citrix Gateway Plug-in' or similar
    Affected if The plugin appears in the list of installed software
  2. Retrieve the exact installed version number
    Right-click the installed Citrix Gateway Plug-in entry and select 'Properties' > 'Details' tab, or query the registry for the DisplayVersion value under the plugin's uninstall key
    Affected if A version number is displayed in the version or product version field
  3. Compare installed version against the affected range
    Document the full version string (for example, 21.9.0.8) and compare numerically to 21.9.1.2 - ensure all four digit groups are evaluated
    Affected if The installed version is lower than 21.9.1.2 (for example, 21.9.0.x, 21.8.x, or any version earlier than 21.9.1.2)
  4. Confirm local access context
    Verify this detection is being run on an endpoint where the Citrix Gateway Plug-in is deployed and actively in use
    Affected if The vulnerable plugin version is installed on a machine accessible to local users

You are affected if Citrix Gateway Plug-in for Windows is installed with any version prior to 21.9.1.2 on an endpoint where a local attacker could interact with the plugin.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 21.9.1.2 or later
Fixed in 21.9.1.2
Interim mitigation

Upgrade Citrix Gateway Plug-in for Windows to version 21.9.1.2 or later to remediate this improper privilege vulnerability.

Recommended fix High confidence

21.9.1.2 or later (Citrix Gateway Plug-in for Windows / Citrix Secure Access for Windows)

  1. 1. Verify the current installed version of Citrix Gateway Plug-in (Citrix Secure Access for Windows) on the affected system
  2. 2. Download Citrix Gateway Plug-in version 21.9.1.2 or later from the official Citrix support portal at support.citrix.com
  3. 3. Close all applications and ensure no VPN sessions are active
  4. 4. Uninstall the current version of Citrix Gateway Plug-in from the Windows system
  5. 5. Restart the computer if prompted by the uninstaller
  6. 6. Install the downloaded version 21.9.1.2 or later of Citrix Gateway Plug-in
  7. 7. Restart the computer if required after installation
  8. 8. Verify the installed version matches or exceeds 21.9.1.2

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Gateway Plug In Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-21827 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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