CVE-2025-48389: freescout Insecure Deserialization

Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.178, FreeScout is vulnerable to deserialization of untrusted data due to insufficient validation. Through the set function, a string with a serialized object can be passed, and when getting an option through the get method, deserialization will occur, which will allow arbitrary code execution This issue has been patched in version 1.8.178.

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CVSS v3.1 Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-502 Deserialization of Untrusted Data

Affected Products

Vendor	Product	Versions
freescout	freescout	< 1.8.178

References

Advisories & Patches

https://github.com/freescout-help-desk/freescout/commit/f7548a7076a0b6e109001069d6be223fbd96c61e https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-jmpv-8q3h-2m8v

Exploits

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-jmpv-8q3h-2m8v

Frequently Asked Questions

What is CVE-2025-48389? +

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.178, FreeScout is vulnerable to deserialization of untrusted data due to insufficient validation. Through the set function, a string with a serialized object can be passed, and when getting an option through the get method, deserialization will occur, which will allow arbitrary code execution This issue has been patched in version 1.8.178. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2025-48389? +

CVE-2025-48389 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-48389? +

CVE-2025-48389 affects products from freescout, specifically: freescout. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-48389? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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