Critical macOS, SharePoint, vCenter, and Microsoft IKE Flaws Under Active Exploitation

The US Cybersecurity and Infrastructure Security Agency has added four critical vulnerabilities to its list of known exploited vulnerabilities, indicating they are being actively exploited. One of the vulnerabilities is an improper authentication issue in Apple macOS, assigned the identifier CVE-2026-65400, with a high severity score of 9.8. This flaw could potentially allow unauthorized access. The other vulnerabilities affect SharePoint, vCenter, and Microsoft IKE. These vulnerabilities have been added to the agency's catalog due to their active exploitation in the wild.