How severe is CVE-2021-41809?

CVE-2021-41809 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-41809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41809?

CVE-2021-41809 affects M-files M-files Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-41809 published?

CVE-2021-41809 was published on 2022-01-18 and last updated on 2026-06-17.

CVE-2021-41809

CVE-2021-41809 is a low-severity vulnerability in M-files M-files Server with a CVSS 3.x base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: M-files M-files Server
Published: 2022-01-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-41809?: 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.
How severe is CVE-2021-41809?: CVE-2021-41809 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-41809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41809?: CVE-2021-41809 affects M-files M-files Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41809 published?: CVE-2021-41809 was published on 2022-01-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:m-files:m-files_server:*:*:*:*:*:*:*:*

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