CVE-2022-21827

SYSTEM-level file corruption or deletion via undisclosed flaw

Published May 26, 2022 · Updated Aug 3, 2024

Improper access control in Citrix Secure Access for Windows before 21.9.1.2 allows local users to corrupt or delete files as SYSTEM. Citrix has not published the affected component or the operation that mishandles access control for file writes and deletions. Exploitation requires local access to a Windows computer with the vulnerable plug-in installed and affects file integrity and availability.

CVSS severity7.1
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Citrix Secure Access for Windows before 21.9.1.2 allows local users to corrupt or delete files as SYSTEM. Citrix has not published the affected component or the operation that mishandles access control for file writes and deletions. Exploitation requires local access to a Windows computer with the vulnerable plug-in installed and affects file integrity and availability.

The record

CVE
CVE-2022-21827
Published
May 26, 2022
Updated
Aug 3, 2024
Vendor
Citrix
Product
Citrix Secure Access for Windows
Classifications
CWE-284, T1485, T1565.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Citrix Gateway Plug-in for Windows versions before 21.9.1.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Citrix · Citrix Secure Access for Windowsversion=Citrix Gateway Plug-in for Windows versions before 21.9.1.2

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
6.6NIST NVDAV:L/AC:L/Au:N/C:N/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1485Data Destruction
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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