Vulnerability · Published Dec 4, 2025 · Assigned by VulnCheck
CVE-2025-66571UNA CMS 9.0.0-RC1 - 14.0.0-RC4 PHP Object Injection
Critical 9.3
In plain English
A critical-severity unsafe deserialization in UNA CMS from Unknown. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Severity (CVSS 4.0)9.3Critical
Exploit odds (30 days)0.7%top 48.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-502 · 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 exploit
- UNA CMS Homepage product
- UNA CMS GitHub Repository product
- Karma Security Advisory vdb-entry
- https://www.vulncheck.com/advisories/una-cms-900-rc1-1400-rc4-php-object-injection third-party-advisory