What is CVE-2020-8283?

CVE-2020-8283 is a high-severity vulnerability in Citrix Virtual Apps And Desktops, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2020-12-14.

How severe is CVE-2020-8283?

High severity. CVSS v3 base score is 8.8 out of 10.

Privilege escalation in Citrix Virtual Apps And Desktops

CVE-2020-8283

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.

Vulnerability class: Privilege Escalation

Published 2020-12-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.027 (85.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.027 · change: +0.001

Affected products

Citrix Virtual Apps And Desktops
Citrix Xenapp — versions 7.6, 7.15
Citrix Xendesktop — versions 7.6, 7.15
Citrix Virtual Apps And Desktops — versions 2009, 1912 LTSR CU1 hotfixes CTX285870 and CTX286120, 7.15 LTSR CU6 hotfix CTX285344 and 7.6 LTSR CU9

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

support.citrix.com/article/CTX285059 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-8283?: CVE-2020-8283 is a high-severity vulnerability in Citrix Virtual Apps And Desktops, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2020-12-14.
How severe is CVE-2020-8283?: High severity. CVSS v3 base score is 8.8 out of 10.