CVE-2025-3086Network attack vector

Service disruption via anonymous cross-user view modification

Published Apr 4, 2025 · Updated Feb 23, 2026

Improper user isolation in M-Files Server before 25.3.14549 allows remote attackers to alter other anonymous users' views. The server fails to isolate view ownership between anonymous sessions, so one session can create or delete views used by another; M-Files has not disclosed the code-level cause. Anonymous vault access must be enabled, a non-default setting, and repeated cross-user view changes can interrupt server service.

CVSS severity6.3
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper user isolation in M-Files Server before 25.3.14549 allows remote attackers to alter other anonymous users' views. The server fails to isolate view ownership between anonymous sessions, so one session can create or delete views used by another; M-Files has not disclosed the code-level cause. Anonymous vault access must be enabled, a non-default setting, and repeated cross-user view changes can interrupt server service.

The record

CVE
CVE-2025-3086
Published
Apr 4, 2025
Updated
Feb 23, 2026
Vendor
M-Files
Product
M-Files Server
Classifications
CWE-653, CAPEC-130, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <25.3.14549

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

M-Files · M-Files Serverversion=0 <25.3.14549

Published CVSS scores

6.3M-Files CorporationCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
7.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-653Improper Isolation or Compartmentalization
CAPEC-130Excessive Allocation
T1499.004Application or System Exploitation DoS

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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