UNA CMS 9.0.0-RC1 - 14.0.0-RC4 PHP Object Injection | Advisories

Advisories

UNA CMS 9.0.0-RC1 - 14.0.0-RC4 PHP Object Injection

severity: critical
date: December 4, 2025
Affecting: UNA CMS 9.0.0-RC1 - 14.0.0-RC4
CVE: CVE-2025-66571
CVE type: CWE-502 Deserialization of Untrusted Data
CVSS: 9.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: ExploitDB-52139
UNA CMS Homepage
UNA CMS GitHub Repository
Karma in Security Advisory (KIS-2025-01)
Credit: Egidio Romano (EgiX)
Description: UNA CMS versions 9.0.0-RC1 - 14.0.0-RC4 contain a PHP object injection vulnerability in BxBaseMenuSetAclLevel.php where the profile_id POST parameter is passed to PHP unserialize() without proper handling, allowing remote, unauthenticated attackers to inject arbitrary PHP objects and potentially write and execute arbitrary PHP code.