CVE-2025-22859Network attack vector

Unauthenticated file write via traversal upload path

Published May 13, 2025 · Updated May 13, 2025

Relative path traversal in Fortinet FortiClient EMS 7.4.0 through 7.4.1 allows remote attackers to write limited files via upload requests. Upload handling fails to constrain a supplied relative path to the intended directory, permitting a file write outside that location. No credentials or user interaction are required, but the write is limited and no code execution or data disclosure is reported.

CVSS severity5.3
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Relative path traversal in Fortinet FortiClient EMS 7.4.0 through 7.4.1 allows remote attackers to write limited files via upload requests. Upload handling fails to constrain a supplied relative path to the intended directory, permitting a file write outside that location. No credentials or user interaction are required, but the write is limited and no code execution or data disclosure is reported.

The record

CVE
CVE-2025-22859
Published
May 13, 2025
Updated
May 13, 2025
Vendor
Fortinet
Product
FortiClient EMS
Classifications
CWE-23, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2025CVE publishedPublication date reported by the CVE source.
  2. May 13, 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=7.4.0 <=7.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortinet · FortiClient EMSversion=7.4.0 <=7.4.1

Published CVSS scores

5.3Fortinet, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A: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.

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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-23Relative Path Traversal
T1190Exploit Public-Facing Application

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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