CVE-2025-13008Network attack vector

Account impersonation via captured session tokens

Published Dec 19, 2025 · Updated Dec 19, 2025

Information disclosure in M-Files Server's M-Files Web before 25.12.15491.7 allows remote authenticated users to capture active users' session tokens. M-Files has not published the flawed Web component or operation that exposes the tokens; capture requires a victim to be actively using M-Files Web for specific client operations. Captured tokens allow impersonation and actions under the victim's identity and permissions, including data access and server operations.

CVSS severity8.6
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in M-Files Server's M-Files Web before 25.12.15491.7 allows remote authenticated users to capture active users' session tokens. M-Files has not published the flawed Web component or operation that exposes the tokens; capture requires a victim to be actively using M-Files Web for specific client operations. Captured tokens allow impersonation and actions under the victim's identity and permissions, including data access and server operations.

The record

CVE
CVE-2025-13008
Published
Dec 19, 2025
Updated
Dec 19, 2025
Vendor
M-Files
Product
M-Files Server
Classifications
CWE-359, CAPEC-60, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 19, 2025Record 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 <25.12.15491.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

M-Files · M-Files Serverversion=0 <25.12.15491.7

Published CVSS scores

8.6M-Files CorporationCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-359Exposure of Private Personal Information to an Unauthorized Actor
CAPEC-60Reusing Session IDs (aka Session Replay)
T1539Steal Web Session Cookie

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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