dbcve.org
Xenmobile ServerApplication · Citrix

CVE-2021-44519

HIGH · 8.8 CVSS v3.1 Published 2022-04-19
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable 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
In Citrix XenMobile Server through 10.12 RP9, there is an Authenticated Directory Traversal vulnerability, leading to remote code execution.

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

This is an authenticated directory traversal vulnerability in Citrix XenMobile Server (versions up to 10.12 RP9). An authenticated attacker can manipulate file path inputs to escape restricted directories and access unauthorized filesystem locations, which can be chained to achieve remote code execution.

MitigationApply the vendor patch for Citrix XenMobile Server to a version beyond 10.12 RP9. If immediate patching is not feasible, restrict network access to the management interface to trusted IPs and review user access controls.

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
Xenmobile ServerApplication
Affected:= 10.13.0= 10.14.0

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
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/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 checks

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

  1. Confirm Citrix XenMobile Server is installed
    Locate the XenMobile Server installation by checking for the typical installation directory structure or by querying running services for 'XenMobile' or 'Citrix' processes on the host.
    Affected if The product is not present on the system.
  2. Determine the installed XenMobile Server version
    Access the management console or check the version information file within the XenMobile installation directory. The version is typically displayed in the admin UI or obtainable via command line tools included with the product.
    Affected if The installed version is 10.13.0 or 10.14.0.
  3. Verify management interface accessibility
    Check if the XenMobile management web interface (typically ports 8443 or 443) is exposed to the network. This can be done by reviewing firewall rules, reverse proxy configurations, or performing a port scan of the server.
    Affected if The management interface is accessible from untrusted networks.
  4. Confirm authentication is enabled for the management interface
    Review the authentication configuration in the XenMobile admin console to ensure user accounts exist and authentication is required for accessing management functions.
    Affected if The management interface permits unauthenticated access to file path parameters.
  5. Identify any user accounts with access to file upload or path parameters
    Review the list of user roles and permissions in the XenMobile admin console, focusing on accounts that have access to features involving file paths or uploads.
    Affected if Low-privilege or compromised user accounts can manipulate file path inputs.

A user is affected if Citrix XenMobile Server is installed and the version is 10.13.0 or 10.14.0, with the management interface accessible and authentication configured.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor patch for Citrix XenMobile Server to a version beyond 10.12 RP9. If immediate patching is not feasible, restrict network access to the management interface to trusted IPs and review user access controls.

Recommended fix Moderate confidence

XenMobile Server 10.13 RP1+ or 10.14 RP1+ (latest available Rollup Patch for respective track)

  1. 1. Identify the current XenMobile Server version by checking the /opt/zenserver/bin/zenserver --version or through the XenMobile console under Dashboard > Server > Version
  2. 2. Download the latest XenMobile Server security patch or update from the Citrix download portal (download.citrix.com) - search for XenMobile Server 10.13 or 10.14 latest Rollup Patch (RP)
  3. 3. Schedule a maintenance window as the update may require server downtime
  4. 4. Back up the XenMobile Server configuration and database before applying the update
  5. 5. Apply the security update following Citrix documentation: typically via the XenMobile Server console under Support > Updates > Check for Updates, or by manually uploading the patch via the same interface
  6. 6. After update installation, verify the server status is healthy and all services are running
  7. 7. Confirm the version now shows a patch level beyond the vulnerable versions (e.g., 10.13 RP1 or later, 10.14 RP1 or later)
Caveat Review Citrix release notes for the specific patch for any configuration changes or known issues; some updates may require Java runtime updates or configuration adjustments

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

Fix this in Xenmobile Server Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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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-2021-44519 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