Is CVE-2020-5849 in the CISA KEV catalog?

Yes. CVE-2020-5849 is on the CISA Known Exploited Vulnerabilities list, added 2021-11-03.

What is the CVSS severity of CVE-2020-5849?

CVE-2020-5849 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2020-5849?

CVE-2020-5849 has an EPSS score of 93.15% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2020-5849?

No published fix for CVE-2020-5849 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-05-03. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2020-5849

HIGHCISA KEVEPSS 100th pctl

7.5

CVSS v3

NVD

Description

Unraid 6.8.0 allows authentication bypass.

CWE-697

How to fix

Actively exploited, no published fix found yet

CISA required action: Apply updates per vendor instructions.

Federal remediation due: 2022-05-03

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

93.15%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Unraid Authentication Bypass Vulnerability

Unraid contains an authentication bypass vulnerability that allows attackers to gain access to the administrative interface. This CVE is chainable with CVE-2020-5847 for remote code execution.

Apply updates per vendor instructions.

Remediation due: 2022-05-03

References

Exploit2

Vendor Advisory1

forums.unraid.net

Third-Party Advisory1

sysdream.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-697 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-5217	Critical	9.8	100%	KEV	-
CVE-2020-8864	High	8.8	80%	-	-
CVE-2025-3102	High	8.1	76%	-	-
CVE-2023-32571	Critical	9.8	35%	-	-
CVE-2020-8862	High	8.8	13%	-	-
CVE-2023-23845	Medium	6.8	5.4%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-17.