CVE-2020-5847
CVE-2020-5847 is a critical-severity vulnerability in Unraid with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2021-11-03).
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- EPSS exploit prediction: 96% (100th percentile)
- Actively exploited: Yes — listed in CISA KEV (added 2021-11-03)
- EU (EUVD) id: EUVD-2020-27001
- EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2021-11-03)
- Affected product: Unraid
- Published:
- Last modified:
Description
Unraid through 6.8.0 allows Remote Code Execution.
Frequently asked questions
- What is CVE-2020-5847?
- Unraid through 6.8.0 allows Remote Code Execution.
- How severe is CVE-2020-5847?
- CVE-2020-5847 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-5847 being actively exploited?
- Yes. CVE-2020-5847 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-11-03, which means active exploitation has been confirmed. It should be prioritised for remediation.
- What products are affected by CVE-2020-5847?
- CVE-2020-5847 affects Unraid. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-5847?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
- Does CVE-2020-5847 have an EU (EUVD) identifier?
- Yes. CVE-2020-5847 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-27001. It is also flagged as exploited in the EUVD (since 2021-11-03).
- When was CVE-2020-5847 published?
- CVE-2020-5847 was published on 2020-03-16 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/157275/Unraid-6.8.0-Authentication-Bypass-Arbitrary-Code-Execution.html
- https://forums.unraid.net/forum/7-announcements/
- https://sysdream.com/news/lab/
- https://sysdream.com/news/lab/2020-02-06-cve-2020-5847-cve-2020-5849-unraid-6-8-0-unauthenticated-remote-code-execution-as-root/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-5847
Affected products (1)
- cpe:2.3:o:unraid:unraid:*:*:*:*:*:*:*:*
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