Is CVE-2021-41809 in the CISA KEV catalog?

No. CVE-2021-41809 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-41809?

CVE-2021-41809 has a CVSS v3 base score of 3.5 (LOW).

What is the EPSS score for CVE-2021-41809?

CVE-2021-41809 has an EPSS score of 0.56% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-41809?

Upgrade m-files server to 22.1.11017.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-41809

LOW

3.5

CVSS v3

NVD

Description

SSRF vulnerability in M-Files Server products with versions before 22.1.11017.1, in a preview function allowed making queries from the server with certain document types referencing external entities.

CWE-918Server-Side Request Forgery (SSRF)

How to fix

Remediation Available

m-files serverNVD

Affected:< 22.1.11017.1Fixed in:22.1.11017.1CVE-2021-41809derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.56%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Vendor Advisory1

m-files.com

Other references1

empower.m-files.com

Related Vulnerabilities

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-21893	High	8.2	100%	KEV + Ransom	-
CVE-2021-40438	Critical	9.0	100%	KEV	Fix
CVE-2021-34473	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2021-26855	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-41040	High	8.8	100%	KEV + Ransom	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 2026-02-23.