Daily Security Briefing March 21, 2026 CISA added three Apple vulnerabilities to the Known Exploited Vulnerabilities catalog on March 20, 2026. These affect iOS, iPadOS, macOS, watchOS, visionOS, tvOS, and Safari. All three are confirmed actively exploited in the wild and require patching by April 3, 2026. 1. Safari and WebKit Memory Corruption CVE-2025-31277 | CVSS 8.8 | HIGH Severity | Actively Exploited Affected Product Apple Safari (prior to 18.6), iOS and