CVE-2020-8283

Name: CVE-2020-8283
Creator: NVD / NIST
Published: 2020-12-14T20:15:13.84+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.57%

Last modified Jun 17, 2026

CVE-2020-8283 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An authorised user on a Windows host running Citrix Universal Print Server can perform arbitrary command execution as SYSTEM in CVAD versions before 2009, 1912 LTSR CU1 hotfixes CTX285870 and CTX286120, 7.15 LTSR CU6 hotfix CTX285344 and 7.6 LTSR CU9.. EPSS estimates a 2.57% chance of exploitation in the next 30 days.

Description

An authorised user on a Windows host running Citrix Universal Print Server can perform arbitrary command execution as SYSTEM in CVAD versions before 2009, 1912 LTSR CU1 hotfixes CTX285870 and CTX286120, 7.15 LTSR CU6 hotfix CTX285344 and 7.6 LTSR CU9.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.57%

83.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Citrix	Virtual Apps And Desktops	<= 2006
Citrix	Virtual Apps And Desktops	>= 1903, <= 1912
Citrix	Xenapp	< 7.6
Citrix	Xenapp	>= 7.7, < 7.15
Citrix	Xenapp	7.6
Citrix	Xenapp	7.15
Citrix	Xendesktop	< 7.6
Citrix	Xendesktop	>= 7.7, < 7.15
Citrix	Xendesktop	7.6
Citrix	Xendesktop	7.15

References

https://support.citrix.com/article/CTX285059Vendor Advisory
https://support.citrix.com/article/CTX285059Vendor Advisory

Timeline

Published: Dec 14, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8283?

How severe is CVE-2020-8283?

CVE-2020-8283 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.57% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8283?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8283?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST