CVE-2023-5523

M-Files Web Companion allows Remote Code Execution

HIGH

7.8

CVSS Score

Published: October 20, 2023 at 06:40 AM UTC

Updated: June 17, 2026 at 06:48 AM UTC

2 products affected across 1 vendorWeb CompanionWeb Companion

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Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Web Companion · M Files

95%

v < 23.823.3 ≤ v < 23.1023.8

Affected range stops below 23.10, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.8, so it looks safe — our inference, not a vendor statement

Web Companion · M Files

60%

23.3 ≤ v < 23.1023.3

Affected range stops below 23.10, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 23.8 LTS SR1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Vendor Advisory

Source: [email protected]

https://product.m-files.com/security-advisories/cve-2023-5523/

Source: af854a3a-2127-422b-91ae-364da2661108

https://www.m-files.com/about/trust-center/security-advisories/cve-2023-5523/

Vendor Advisory

Source: cverecord

https://empower.m-files.com/security-advisories/CVE-2023-5523

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGH[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-829

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