A validation flaw exists in macOS's entitlement verification logic, which allows an application to potentially bypass required checks and obtain elevated privileges. The flaw was identified in the entitlement verification process and noted as an area where the system fails to properly confirm the rights of an app before allowing privileged operations. The fix introduces more rigorous validation to prevent apps from assuming higher-level entitlements than they are authorized for.

Apple states that the vulnerability affects macOS releases prior to Sequoia 15.7.5, Sonoma 14.8.5, and Tahoe 26.4. The affected systems are any macOS installations that have not been updated to these specific patch versions or later. The resolution is to install the latest available macOS update that includes the entitlement verification patch.

The CVSS score is 8.4, indicating a high severity threat, although the EPSS score is below 1 % suggesting low current exploitation probability. The vulnerability is not listed in the CISA KEV catalog. The likely attack vector is local privilege escalation, as the flaw is in entitlement checks performed during application execution. An attacker who can deliver a malicious app or otherwise invoke the vulnerable entitlement logic could gain elevated rights on the affected system.