How severe is CVE-2023-5523?

CVE-2023-5523 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-5523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5523?

CVE-2023-5523 primarily affects M-files Web Companion. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-5523?

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-2023-5523 published?

CVE-2023-5523 was published on 2023-10-20 and last updated on 2026-06-17.

CVE-2023-5523

CVE-2023-5523 is a high-severity vulnerability in M-files Web Companion with a CVSS 3.x base score of 8.6. 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-829.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-829
Affected product: M-files Web Companion
Published: 2023-10-20
Last modified: 2026-06-17

Description

Execution of downloaded content flaw in M-Files Web Companion before release version 23.10 and LTS Service Release Versions before 23.8 LTS SR1 allows Remote Code Execution

Frequently asked questions

What is CVE-2023-5523?: Execution of downloaded content flaw in M-Files Web Companion before release version 23.10 and LTS Service Release Versions before 23.8 LTS SR1 allows Remote Code Execution
How severe is CVE-2023-5523?: CVE-2023-5523 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-5523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5523?: CVE-2023-5523 primarily affects M-files Web Companion. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-5523?: 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-2023-5523 published?: CVE-2023-5523 was published on 2023-10-20 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:m-files:web_companion:*:*:*:*:lts:*:*:*
cpe:2.3:a:m-files:web_companion:*:*:*:*:-:*:*:*
cpe:2.3:a:m-files:web_companion:23.8:-:*:*:lts:*:*:*

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