CVE-2025-43520: Apple Multiple Products Classic Buffer Overflow Vulnerability

Added to the CISA Known Exploited Vulnerabilities catalog on 20 Mar 2026. Vendor: Apple. Product: Multiple Products.

Apple watchOS, iOS, iPadOS, macOS, visionOS, and tvOS contain a classic buffer overflow vulnerability which could allow a malicious application to cause unexpected system termination or write kernel memory.

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due 03 Apr 2026)