CVE-2023-5523

HIGHNVD 8.68.6—

8.6

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

CVSS v3: 8.6
EG Score: 8.6(medium)
EPSS: 68.7%
KEV: Not listed

Published

October 20, 2023

Last Modified

February 23, 2026

References (3)

security@m-fileshttps://empower.m-files.com/security-advisories/CVE-2023-5523
security@m-fileshttps://product.m-files.com/security-advisories/cve-2023-5523/
af854a3a-2127-422b-91ae-364da2661108https://www.m-files.com/about/trust-center/security-advisories/cve-2023-5523/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-829Inclusion of Functionality from Untrusted Control Sphere

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 15:26 UTCEG score recompute
2026-05-24 15:26 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-5523?

CVE-2023-5523 is a high vulnerability published on October 20, 2023. 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

When was CVE-2023-5523 disclosed?

CVE-2023-5523 was first published in the National Vulnerability Database on October 20, 2023, with the most recent update on February 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-5523 actively exploited?

CVE-2023-5523 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 68.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-5523?

CVE-2023-5523 has a CVSS v3 base score of 8.6 (NVD).

How do I remediate CVE-2023-5523?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-5523, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-5523

📅 Published

🔄 Last Modified

🔗 References (3)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-5523?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (3)

Frequently asked(5)

Related CVEs(same CWE)