CVE-2025-48389: high-severity vulnerability in freescout-help-desk freescout
FreeScout Vulnerable to Deserialization of Untrusted Data
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 1.0%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Affected products
freescout-help-desk · freescoutRelated CVEs — freescout-help-desk freescout
In the same product, most dangerous first.
CVE-2026-28289CRITICALFreeScout 1.8.206 Patch Bypass for CVE-2026-27636 via Zero-Width Space Character Leads to Remote Code ExecutionEPSS 35.1%CVE-2026-27636HIGHFreeScout: Missing .htaccess in Restricted File Extensions Allows Remote Code Execution on ApacheEPSS 2.2%CVE-2026-53595CRITICALFreeScout vulnerable to anonymous account takeover via /user-setup empty invite_hash on MySQLEPSS 1.9%CVE-2025-48471HIGHFreeScout Vulnerable to Arbitrary File UploadEPSS 1.2%CVE-2025-54366HIGHFreeScout's deserialization of untrusted data leads to Remote Code ExecutionEPSS 1.1%CVE-2025-48390HIGHFreeScout Vulnerable to Remote Code Execution (RCE)EPSS 1.0%