CVE-2020-3997

Name: CVE-2020-3997
Creator: NVD / NIST
Published: 2020-10-23T14:15:12.53+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2020-3997 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. VMware Horizon Server (7.x prior to 7.10.3 or 7.13.0) contains a Cross Site Scripting (XSS) vulnerability. Successful exploitation of this issue may allow an attacker to inject malicious script which will be executed.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

VMware Horizon Server (7.x prior to 7.10.3 or 7.13.0) contains a Cross Site Scripting (XSS) vulnerability. Successful exploitation of this issue may allow an attacker to inject malicious script which will be executed.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.66%

46.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Vmware	Horizon	>= 7.0, < 7.10.3
Vmware	Horizon	>= 7.11.0, < 7.13.0

References

https://www.vmware.com/security/advisories/VMSA-2020-0024.htmlPatch, Vendor Advisory
https://www.vmware.com/security/advisories/VMSA-2020-0024.htmlPatch, Vendor Advisory

Timeline

Published: Oct 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3997?

How severe is CVE-2020-3997?

CVE-2020-3997 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3997?

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-2020-3997?

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

Scan your code now

Source: NVD / NIST