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PatchSiren cyber security CVE debrief

CVE-2020-5847 Unraid CVE debrief

CVE-2020-5847 is a Unraid remote code execution vulnerability that CISA added to its Known Exploited Vulnerabilities catalog. The supplied records indicate it is considered actively relevant for defenders, but the corpus does not include affected versions, attack details, or a CVSS score. CISA’s required action is to apply updates per vendor instructions.

Vendor
Unraid
Product
Unraid
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2021-11-03
Original CVE updated
2021-11-03
Advisory published
2021-11-03
Advisory updated
2021-11-03

Who should care

Unraid administrators, infrastructure and security teams responsible for Unraid deployments, and incident response teams tracking exploited vulnerabilities.

Technical summary

The official corpus identifies CVE-2020-5847 as an Unraid remote code execution issue. CISA’s KEV entry records the vendor as Unraid, the product as Unraid, and the required action as applying updates per vendor instructions. The source set does not provide root cause, exploit preconditions, affected versions, or mitigation specifics beyond patching guidance. The KEV entry was added on 2021-11-03 with a due date of 2022-05-03.

Defensive priority

Critical

Recommended defensive actions

  • Inventory all Unraid deployments and confirm which instances are in service.
  • Check vendor guidance and apply the latest Unraid updates as directed.
  • Prioritize remediation for any exposed or business-critical Unraid systems.
  • Verify patch status after updating and document the remediation date.
  • Review logs and administrative activity for unexpected changes around the exposure window.
  • If immediate patching is not possible, reduce exposure by limiting access and isolating the system until updates are applied.

Evidence notes

This debrief is based only on the supplied official sources: the CISA Known Exploited Vulnerabilities feed entry, the official CVE record link, and the NVD detail link. The corpus confirms the vulnerability name, vendor/product association, KEV inclusion, dateAdded of 2021-11-03, dueDate of 2022-05-03, and the vendor instruction to apply updates. It does not provide exploit mechanics, affected versions, or a CVSS score.

Sources and references

Verified primary and authoritative sources

  • CVE-2020-5847 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2020-5847

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2020-5847 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2020-5847

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.