---
cve: "CVE-2022-21145"
severity: "CRITICAL"
cvss: 9.1
epss: "77.8%"
vendor: "Lansweeper"
kev: false
exploited: false
published: "2022-04-14 19:56:34"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-27T23:14:12+01:00"
---

# CVE-2022-21145

> 9.1 CRITICAL

## Beschreibung

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.

## CNA-Record (Kanon, cvelistV5)

- CNA: **talos**
- State: PUBLISHED
- Stand: 2025-04-15 19:06:04
- CNA-CVSS: **9.1** (`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Hoch | good |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Schwachstellen-Klasse

- **CWE-80** — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
  The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

## Angriffsmuster (CAPEC)

- [CAPEC-18 — XSS Targeting Non-Script Elements](https://capec.mitre.org/data/definitions/18.html) _(Severity: Very High)_
- [CAPEC-32 — XSS Through HTTP Query Strings](https://capec.mitre.org/data/definitions/32.html) _(Severity: High)_
- [CAPEC-86 — XSS Through HTTP Headers](https://capec.mitre.org/data/definitions/86.html) _(Severity: Very High)_
- [CAPEC-193 — PHP Remote File Inclusion](https://capec.mitre.org/data/definitions/193.html) _(Severity: High)_

## Referenzen

- <https://talosintelligence.com/vulnerability_reports/TALOS-2022-1442>
- <https://www.lansweeper.com/changelog/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2022-21145/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_