Which products and versions are affected by CVE-2022-21145?

Affected: Lansweeper versions 9.1.20.2, >= 9.1.20.2. The full list is in the CVE brief.

Is CVE-2022-21145 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2022-21145 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2022-21145?

Public exploit code is available.

Is there a fix for CVE-2022-21145?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2022-21145 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Request A Demo

Vulnerability Intelligence

CVE-2022-21145

MediumPublic exploit

A stored cross-site scripting vulnerability exists in the WebUserActions.aspx functionality of Lansweeper lansweeper 9.1.20.2.

Published Apr 14, 2022 · Updated Apr 15, 2025

Key Facts

Patch immediately

CVE-2022-21145 is a medium-severity vulnerability (CVSS 4.8 v3.1) affecting Lansweeper.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 78% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

4.8

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

EPSS (30-day exploit likelihood)

78%

Higher than 99.5% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2022-21145 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

A stored cross-site scripting vulnerability exists in the WebUserActions.aspx functionality of Lansweeper lansweeper 9.1.20.2. A specially-crafted HTTP request can lead to arbitrary Javascript code injection. An attacker can send an HTTP request to trigger this vulnerability.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
LansweeperLansweeper	9.1.20.2, >= 9.1.20.2	n/a

Timeline

Publicly disclosed
Apr 14, 2022
Last updated
Apr 15, 2025

Weakness Type

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References

FAQ

Common Questions.

A stored cross-site scripting vulnerability exists in the WebUserActions.aspx functionality of Lansweeper lansweeper 9.1.20.2.
Affected: Lansweeper versions 9.1.20.2, >= 9.1.20.2. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2022-21145 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.