CVE-2025-64153Network attack vector

Authenticated command execution via unsanitized API input

Published Dec 9, 2025 · Updated Jan 14, 2026

OS command injection in Fortinet FortiExtender allows remote authenticated users to execute unauthorized commands through its API. The affected API handlers fail to neutralize shell metacharacters before incorporating request data into operating-system commands; Fortinet has not disclosed the routes or parameters. Exploitation requires high-privilege authentication and can compromise confidentiality, integrity, and availability on the appliance.

CVSS severity7.2
High
EPSS probability1.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Fortinet FortiExtender allows remote authenticated users to execute unauthorized commands through its API. The affected API handlers fail to neutralize shell metacharacters before incorporating request data into operating-system commands; Fortinet has not disclosed the routes or parameters. Exploitation requires high-privilege authentication and can compromise confidentiality, integrity, and availability on the appliance.

The record

CVE
CVE-2025-64153
Published
Dec 9, 2025
Updated
Jan 14, 2026
Vendor
Fortinet
Product
FortiExtender
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 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=7.0.0 <=7.0.5
  2. Affected versionversion=7.2.0 <=7.2.5
  3. Affected versionversion=7.4.0 <=7.4.7
  4. Affected versionversion=7.6.0 <=7.6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fortinet · FortiExtenderversion=7.0.0 <=7.0.5; version=7.2.0 <=7.2.5; version=7.4.0 <=7.4.7; version=7.6.0 <=7.6.3

Published CVSS scores

7.2FortinetCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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