How severe is CVE-2020-8283?

CVE-2020-8283 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-8283 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8283?

CVE-2020-8283 primarily affects Citrix Virtual Apps And Desktops. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-8283?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-8283 published?

CVE-2020-8283 was published on 2020-12-14 and last updated on 2026-06-17.

CVE-2020-8283

CVE-2020-8283 is a high-severity vulnerability in Citrix Virtual Apps And Desktops with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Citrix Virtual Apps And Desktops
Published: 2020-12-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2020-8283?: CVE-2020-8283 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-8283 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8283?: CVE-2020-8283 primarily affects Citrix Virtual Apps And Desktops. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-8283?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-8283 published?: CVE-2020-8283 was published on 2020-12-14 and last updated on 2026-06-17.

References

https://support.citrix.com/article/CTX285059

Affected products (12)

cpe:2.3:a:citrix:virtual_apps_and_desktops:*:*:*:*:-:*:*:*
cpe:2.3:a:citrix:virtual_apps_and_desktops:*:*:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xenapp:*:*:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xenapp:7.6:-:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xenapp:7.6:cu8:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xenapp:7.15:-:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xenapp:7.15:cu6:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xendesktop:*:*:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xendesktop:7.6:-:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xendesktop:7.6:cu8:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xendesktop:7.15:-:*:*:ltsr:*:*:*
cpe:2.3:a:citrix:xendesktop:7.15:cu6:*:*:ltsr:*:*:*

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