CVE-2025-43520 — Apple Multiple Products: Apple Multiple Products Classic Buffer Overflow Vulnerability
CVE-2025-43520 — 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.
What This Means For You
- CISA has confirmed active exploitation — immediate patching required.
- Added to CISA KEV catalog — federal agencies must remediate by 2026-04-03.
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2025-43520 | Buffer Overflow | Apple watchOS, iOS, iPadOS, macOS, visionOS, and tvOS. Vulnerability could allow a malicious application to cause unexpected system termination or write kernel memory. |
Source & Attribution
| Source Platform | CISA |
| Channel | CISA KEV |
| Published | March 20, 2026 at 14:00 UTC |
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