How severe is CVE-2020-5849?

CVE-2020-5849 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-5849 being actively exploited?

Yes. CVE-2020-5849 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-2020-5849?

CVE-2020-5849 affects Unraid. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5849?

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-2020-5849 have an EU (EUVD) identifier?

Yes. CVE-2020-5849 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-27003. It is also flagged as exploited in the EUVD (since 2021-11-03).

When was CVE-2020-5849 published?

CVE-2020-5849 was published on 2020-03-16 and last updated on 2026-06-17.

CVE-2020-5849

CVE-2020-5849 is a high-severity vulnerability in Unraid with a CVSS 3.x base score of 7.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2021-11-03). The underlying weakness is classified as CWE-697.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 93% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2021-11-03)
EU (EUVD) id: EUVD-2020-27003
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2021-11-03)
Weakness: CWE-697
Affected product: Unraid
Published: 2020-03-16
Last modified: 2026-06-17

Description

Unraid 6.8.0 allows authentication bypass.

Frequently asked questions

What is CVE-2020-5849?: Unraid 6.8.0 allows authentication bypass.
How severe is CVE-2020-5849?: CVE-2020-5849 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-5849 being actively exploited?: Yes. CVE-2020-5849 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-2020-5849?: CVE-2020-5849 affects Unraid. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5849?: 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-2020-5849 have an EU (EUVD) identifier?: Yes. CVE-2020-5849 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-27003. It is also flagged as exploited in the EUVD (since 2021-11-03).
When was CVE-2020-5849 published?: CVE-2020-5849 was published on 2020-03-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:unraid:unraid:6.8.0:*:*:*:*:*:*:*

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