CVE-2025-43520
Classic Buffer Overflow in Apple Multiple Products. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 20 March 2026.
- Product
- Apple Multiple Products
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
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.
More from Apple this year.
- CVE-2024-27834 Improper Authentication, added
- CVE-2026-86950 Out-of-Bounds Write, added
- CVE-2026-65400 Improper Authentication, added
- CVE-2025-43510 Improper Locking, added
- CVE-2025-31277 Buffer Overflow, added
- CVE-2023-43000 Use-After-Free, added
- CVE-2023-41974 Use-After-Free, added
- CVE-2021-30952 Integer Overflow or Wraparound, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.