FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Versions 1.8.185 and earlier contain a deserialization of untrusted data vulnerability that allows authenticated attackers with knowledge of the application's APP_KEY to achieve remote code execution. The vulnerability is exploited via endpoint, e.g.: `/help/{mailbox_id}/auth/{customer_id}/{hash}/{timestamp}` where the `customer_id` and `timestamp` parameters are processed through the decrypt function in `app/Helper.php` without proper validation. The code decrypts using Laravel's built-in encryption functions, which subsequently deserialize the decrypted payload without sanitization, allowing attackers to craft malicious serialized PHP objects using classes to trigger arbitrary command execution. This is fixed in version 1.8.186.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00216.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Freescout
  • Freescout
Freescout Helpdesk
  • Freescout

Configuration 1 [-]

cpe:2.3:a:freescout:freescout:*:*:*:*:*:*:*:*

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Freescout Helpdesk
  • Freescout
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/freescout-help-desk/freescout/commit/e2de65f3f32f825b4ec5558643ed81438c9a6bc6 cve-icon cve-icon
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.186 cve-icon cve-icon
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-j94w-q9gj-c37g cve-icon cve-icon
History

Mon, 08 Sep 2025 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Freescout
Freescout freescout
CPEs cpe:2.3:a:freescout:freescout:*:*:*:*:*:*:*:*
Vendors & Products Freescout
Freescout freescout
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Wed, 03 Sep 2025 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Freescout Helpdesk
Freescout Helpdesk freescout
Vendors & Products Freescout Helpdesk
Freescout Helpdesk freescout

Wed, 03 Sep 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 03 Sep 2025 03:30:00 +0000

Type Values Removed Values Added
References

Wed, 03 Sep 2025 03:00:00 +0000

Type Values Removed Values Added
References

Wed, 03 Sep 2025 02:45:00 +0000

Type Values Removed Values Added
Description FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. In versions 1.8.185 and below, the application performs deserialization of data that can allow authenticated attackers with knowledge of the application's APP_KEY to achieve remote code execution. The vulnerability can be exploited via endpoint: `/help/{mailbox_id}/auth/{customer_id}/{hash}/{timestamp}` where the `customer_id` and `timestamp` parameters are processed through the decrypt function in `app/Helper.php` without proper validation. The vulnerable code performs decryption using Laravel's built-in encryption functions, which subsequently deserializes the decrypted payload without sanitization. This is fixed in version 1.8.186. FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Versions 1.8.185 and earlier contain a deserialization of untrusted data vulnerability that allows authenticated attackers with knowledge of the application's APP_KEY to achieve remote code execution. The vulnerability is exploited via endpoint, e.g.: `/help/{mailbox_id}/auth/{customer_id}/{hash}/{timestamp}` where the `customer_id` and `timestamp` parameters are processed through the decrypt function in `app/Helper.php` without proper validation. The code decrypts using Laravel's built-in encryption functions, which subsequently deserialize the decrypted payload without sanitization, allowing attackers to craft malicious serialized PHP objects using classes to trigger arbitrary command execution. This is fixed in version 1.8.186.
References

Wed, 03 Sep 2025 01:45:00 +0000

Type Values Removed Values Added
Description FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. In versions 1.8.185 and below, the application performs deserialization of data that can allow authenticated attackers with knowledge of the application's APP_KEY to achieve remote code execution. The vulnerability can be exploited via endpoint: `/help/{mailbox_id}/auth/{customer_id}/{hash}/{timestamp}` where the `customer_id` and `timestamp` parameters are processed through the decrypt function in `app/Helper.php` without proper validation. The vulnerable code performs decryption using Laravel's built-in encryption functions, which subsequently deserializes the decrypted payload without sanitization. This is fixed in version 1.8.186.
Title FreeScout's deserialization of untrusted data can lead to Remote Code Execution
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-09-03T15:44:39.509Z

Reserved: 2025-08-27T13:34:56.186Z

Link: CVE-2025-58163

cve-icon Vulnrichment

Updated: 2025-09-03T13:47:23.188Z

cve-icon NVD

Status : Analyzed

Published: 2025-09-03T02:15:37.193

Modified: 2025-09-08T15:03:47.560

Link: CVE-2025-58163

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-09-03T19:30:21Z