How severe is CVE-2023-3405?

CVE-2023-3405 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 none, integrity none, and availability high.

Is CVE-2023-3405 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3405?

CVE-2023-3405 affects M-files M-files Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-3405?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-3405 published?

CVE-2023-3405 was published on 2023-06-27 and last updated on 2026-06-17.

CVE-2023-3405

CVE-2023-3405 is a high-severity vulnerability in M-files M-files Server with a CVSS 3.x base score of 7.5. 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-248.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-248
Affected product: M-files M-files Server
Published: 2023-06-27
Last modified: 2026-06-17

Description

Unchecked parameter value in M-Files Server in versions before 23.6.12695.3 (excluding 23.2 SR2 and newer) allows anonymous user to cause denial of service

Frequently asked questions

What is CVE-2023-3405?: Unchecked parameter value in M-Files Server in versions before 23.6.12695.3 (excluding 23.2 SR2 and newer) allows anonymous user to cause denial of service
How severe is CVE-2023-3405?: CVE-2023-3405 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 none, integrity none, and availability high.
Is CVE-2023-3405 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3405?: CVE-2023-3405 affects M-files M-files Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-3405?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-3405 published?: CVE-2023-3405 was published on 2023-06-27 and last updated on 2026-06-17.

References

Affected products (1)

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

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