---
cve: "CVE-2021-47891"
severity: "CRITICAL"
cvss: 9.3
epss: "0.9%"
vendor: "Unified Intents AB"
kev: false
exploited: false
published: "2026-01-23 17:15:52"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-10T18:00:25+02:00"
---

# CVE-2021-47891

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

Unified Remote 3.9.0.2463 contains a remote code execution vulnerability that allows attackers to send crafted network packets to execute arbitrary commands. Attackers can exploit the service by connecting to port 9512 and sending specially crafted packets to open a command prompt and download and execute malicious payloads.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://www.exploit-db.com/exploits/49587>
- <https://www.unifiedremote.com/>
- <https://www.unifiedremote.com/download>
- <https://www.vulncheck.com/advisories/unified-remote-remote-code-execution>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2021-47891/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_