CVE-2025-67728Network attack vector

Remote command execution via unsanitized upload filename

Published Dec 12, 2025 · Updated Dec 12, 2025

OS command injection in Fireshare before 1.3.0 allows remote authenticated users to execute arbitrary commands via a crafted video filename. Upload handlers embed the unsanitized filename-derived save path in a Popen shell command, allowing shell metacharacters to alter execution. Authentication is required unless Public Uploads is enabled; successful exploitation runs commands with the Fireshare service account's privileges.

CVSS severity9.8
Critical
EPSS probability0.69%
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 Fireshare before 1.3.0 allows remote authenticated users to execute arbitrary commands via a crafted video filename. Upload handlers embed the unsanitized filename-derived save path in a Popen shell command, allowing shell metacharacters to alter execution. Authentication is required unless Public Uploads is enabled; successful exploitation runs commands with the Fireshare service account's privileges.

The record

CVE
CVE-2025-67728
Published
Dec 12, 2025
Updated
Dec 12, 2025
Vendor
Shane Israel
Product
Fireshare
Classifications
CWE-77, T1190, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 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=< 1.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shane Israel · Fireshareversion=< 1.3.0

Published CVSS scores

9.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1190Exploit Public-Facing Application
T1059Command and Scripting Interpreter

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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