CVE-2020-5847 (GCVE-0-2020-5847)

Vulnerability from cvelistv5 – Published: 2020-03-16 17:23 – Updated: 2025-10-21 23:35
VLAI CISA Previdian
Summary
Unraid through 6.8.0 allows Remote Code Execution.
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-04 19:58 UTC
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2020-5847

Status: Confirmed

Status Updated: 2021-11-03 01:00 CET

Exploited: Yes


Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03

Scope
Notes: Unraid Remote Code Execution Vulnerability | Affected: Unraid / Unraid | Description: Unraid contains a vulnerability due to the insecure use of the extract PHP function that can be abused to execute remote code as root. This CVE is chainable with CVE-2020-5849 for initial access. | Required action: Apply updates per vendor instructions. | Due date: 2022-05-03 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2020-5847

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev


Details
Cwes
Feed CISA Known Exploited Vulnerabilities Catalog
Product Unraid
Due Date 2022-05-03
Date Added 2021-11-03
Vendorproject Unraid
Vulnerabilityname Unraid Remote Code Execution Vulnerability
Knownransomwarecampaignuse Unknown

References

Created: 2026-10-02 08:10 CEST | Updated: 2026-10-02 08:10 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2020-5847

Status: Confirmed

Status Updated: 2021-11-03 01:00 CET

Exploited: Yes


Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03

Scope
Notes: Unraid through 6.8.0 allows Remote Code Execution. | Affected: Lime Technology / Unraid | CVSS: 9.8 (CRITICAL) | EPSS: 0.95844 | Used in malware: unknown | Not yet in CISA KEV: False

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian


Details
Feed Previdian (previdian.com)
Title Unraid through 6.8.0 allows Remote Code Execution.
Cve Id CVE-2020-5847
Vendor Lime Technology
Ghsa Id None
Product Unraid
Added Date 2021-11-03T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.95844
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99873
Used In Malware unknown
Vulnerability Id CVE-2020-5847
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False

References

Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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