CVE-2026-73694Network attack vector

Command execution via unescaped external-program arguments

Published Sep 10, 2026 · Updated Sep 10, 2026

OS command injection in FileRun before 2026.3.0 allows remote authenticated users to execute commands through preview settings. CLI.php replaces escapeshellcmd() with a no-op, allowing crafted image_preview.php arguments or stored FFmpeg options to reach exec() without escaping. Superuser access is required to supply the payload, which runs with the FileRun web process when checked directly or when any user triggers a video thumbnail.

CVSS severityUnavailable
Unscored
EPSS probability1.81%
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 FileRun before 2026.3.0 allows remote authenticated users to execute commands through preview settings. CLI.php replaces escapeshellcmd() with a no-op, allowing crafted image_preview.php arguments or stored FFmpeg options to reach exec() without escaping. Superuser access is required to supply the payload, which runs with the FileRun web process when checked directly or when any user triggers a video thumbnail.

The record

CVE
CVE-2026-73694
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
FileRun
Product
FileRun
Classifications
T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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 <2026.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

FileRun · FileRunversion=0 <2026.3.0

Published CVSS scores

No CVSS assessment is available in this record.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059Command and Scripting Interpreter

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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