CVE-2020-8191

Name: CVE-2020-8191
Creator: NVD / NIST
Published: 2020-07-10T16:15:12.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 22.94%

Last modified Jun 17, 2026

CVE-2020-8191 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows reflected Cross Site Scripting (XSS).. EPSS estimates a 22.94% chance of exploitation in the next 30 days.

Description

Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and Citrix SDWAN WAN-OP versions before 11.1.1a, 11.0.3d and 10.2.7 allows reflected Cross Site Scripting (XSS).

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

22.94%

97.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Citrix	Application Delivery Controller Firmware	>= 10.5, < 10.5-70.18
Citrix	Application Delivery Controller Firmware	>= 11.1, < 11.1-64.14
Citrix	Application Delivery Controller Firmware	>= 12.0, < 12.0-63.21
Citrix	Application Delivery Controller Firmware	>= 12.1, < 12.1-57.18
Citrix	Application Delivery Controller Firmware	>= 13.0, < 13.0-58.30
Citrix	Netscaler Gateway Firmware	>= 10.5, < 10.5-70.18
Citrix	Netscaler Gateway Firmware	>= 11.1, < 11.1-64.14
Citrix	Netscaler Gateway Firmware	>= 12.0, < 12.0-63.21
Citrix	Netscaler Gateway Firmware	>= 12.1, < 12.1-57.18
Citrix	Gateway Firmware	>= 13.0, < 13.0-58.30
Citrix	Sd-Wan Wanop	>= 10.2, < 10.2.7
Citrix	Sd-Wan Wanop	>= 11.0, < 11.0.3d
Citrix	Sd-Wan Wanop	>= 11.1, < 11.1.1a

References

https://support.citrix.com/article/CTX276688Vendor Advisory
https://support.citrix.com/article/CTX276688Vendor Advisory

Timeline

Published: Jul 10, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8191?

How severe is CVE-2020-8191?

CVE-2020-8191 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 22.94% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8191?

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-2020-8191?

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

Scan your code now

Source: NVD / NIST