CVE-2021-40093

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-12-07 · updated 2026-06-17
Weakness: CWE-79

Description

A cross-site scripting (XSS) vulnerability in integration configuration in SquaredUp for SCOM 5.2.1.6654 allows remote attackers to inject arbitrary web script or HTML via dashboard actions.

Affected products

Squaredup: before 5.3.1 — fixed in 5.3.1

How to fix

Upgrade to a fixed version: Squaredup 5.3.1. Check the vendor advisory for mitigations.

References

https://support.squaredup.com
https://support.squaredup.com/hc/en-us/articles/4410635418257-CVE-2021-40093-Stored-cross-site-scripting-Action-Buttons-
https://support.squaredup.com
https://support.squaredup.com/hc/en-us/articles/4410635418257-CVE-2021-40093-Stored-cross-site-scripting-Action-Buttons-

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