CVE-2025-66571

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.

CVSS v4.0

9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS

0.61% chance of exploitation in the next 30 days, 47th percentile

Published

2025-12-04

Updated

2026-07-28

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/52139

References

• CVE Record
• NVD entry

Related

• CVE-2025-66555
• CVE-2025-66572
• CVE-2025-66516
• CVE-2025-66573
• CVE-2025-66490
• CVE-2025-66574