Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since March 20, 2026.
CVE-2025-43520
Apple Multiple Products Classic Buffer Overflow Vulnerability
Added to KEV March 20, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2025-43520
- CWE
- CWE-120
- Affected products
- Multiple Products · Apple Multiple Products · Apple
What happened
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 it means for your business
Apple Multiple Products is listed in CISA's Known Exploited Vulnerabilities catalog (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. CISA remediation due date: 2026-04-03. If you need help checking exposure, call (864) 335-9223.
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.
CISA due date: April 3, 2026
Sources
Related briefs
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