# CVE-2020-5847: Unraid - RCE

> Live exploitation tracking for CVE-2020-5847 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2020-5847

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 9.8
- **Public exploit available:** Yes
- **Affected products:** Unraid
- **Tags:** nas, file_sharing

## Description

Unraid through 6.8.0 allows Remote Code Execution.

## CrowdSec analysis

[CVE-2020-5847](https://euvd.enisa.europa.eu/vulnerability/CVE-2020-5847) is a critical vulnerability in Unraid through version 6.8.0 that allows remote code execution. This flaw enables attackers to execute arbitrary commands on the affected system without authentication, potentially leading to full system compromise and unauthorized access to sensitive data.

CrowdSec has been tracking this vulnerability and its exploits since 8th of April 2026.

Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2020-5847 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning.
In addition, according to the CrowdSec network, attack volume against CVE-2020-5847 has dipped slightly compared to the previous week. Although still commonly targeted, the decline suggests a cooling-off period. Long-term relevance remains, but attention is waning.

Attackers exploit this vulnerability by sending crafted requests to URLs containing `/webGui/images/green-on.png` with malicious PHP code injected via the `site[x][text]` parameter, enabling remote code execution on UnRaid servers.

## Timeline

- 2020-03-16: CVE Published. CVE-2020-5847 is published to NVD.
- 2021-11-03: CISA KEV. CVE-2020-5847 is added to the Known Exploited Vulnerabilities catalog by CISA.
- 2022-05-03: CISA Remediation Deadline. Expiration of the CISA remediation deadline as described in [BOD 22-01](https://www.cisa.gov/news-events/directives/bod-22-01-reducing-significant-risk-known-exploited-vulnerabilities).
- 2026-04-08: Rule Released. CrowdSec releases a rule to detect CVE-2020-5847 exploitation attempts against the CrowdSec Network.
- 2026-04-08: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2020-5847 for the first time.

## References

- http://packetstormsecurity.com/files/157275/Unraid-6.8.0-Authentication-Bypass-Arbitrary-Code-Execution.html
- https://sysdream.com/news/lab/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-5847
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-5847.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2020-5847) follows observed exploitation activity for CVE-2020-5847. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.