March 20, 2026 · Applied Cybernetics Group
CVE-2025-43520 — Apple Multiple Products
Apple Multiple Products Classic Buffer Overflow Vulnerability
- Added to KEV
2026-03-20- Federal due date
2026-04-03- Vendor
- Apple
- Product
- Multiple Products
- EPSS
- 34.6th percentile (score 0.004, as of
2026-10-04) - NVD CVSS v3.1
- 5.5 (MEDIUM)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-43520
CISA short 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.
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.
NVD description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.