What is CVE-2025-48389?

CVE-2025-48389 is a high-severity vulnerability in Freescout, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2025-05-29.

How severe is CVE-2025-48389?

High severity. CVSS v3 base score is 7.2 out of 10.

Deserialization in Freescout

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.

Vulnerability class: Insecure Deserialization

EPSS: 0.008 (52.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Freescout
Freescout-help-desk Freescout — versions < 1.8.178

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-48389?: CVE-2025-48389 is a high-severity vulnerability in Freescout, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2025-05-29.
How severe is CVE-2025-48389?: High severity. CVSS v3 base score is 7.2 out of 10.