CVE-2021-22021

Name: CVE-2021-22021
Creator: NVD / NIST
Published: 2021-08-30T19:15:08.457+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2021-22021 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. VMware vRealize Log Insight (8.x prior to 8.4) contains a Cross Site Scripting (XSS) vulnerability due to improper user input validation. An attacker with user privileges may be able to inject a malicious payload via the Log Insight UI which would be executed when the victim accesses the shared dashboard link.. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

VMware vRealize Log Insight (8.x prior to 8.4) contains a Cross Site Scripting (XSS) vulnerability due to improper user input validation. An attacker with user privileges may be able to inject a malicious payload via the Log Insight UI which would be executed when the victim accesses the shared dashboard link.

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

0.47%

37.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Vmware	Cloud Foundation	>= 4.0, < 4.3
Vmware	Vrealize Log Insight	>= 4.0, <= 4.8
Vmware	Vrealize Log Insight	>= 8.0.0, < 8.4

References

https://www.vmware.com/security/advisories/VMSA-2021-0019.htmlPatch, Vendor Advisory
https://www.vmware.com/security/advisories/VMSA-2021-0019.htmlPatch, Vendor Advisory

Timeline

Published: Aug 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22021?

How severe is CVE-2021-22021?

CVE-2021-22021 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22021?

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-2021-22021?

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

Scan your code now

Source: NVD / NIST