CVE-2025-43520 — Apple Multiple Products Classic Buffer Overflow Vulnerability
CVE-2025-43520: Apple Multiple Products Classic Buffer Overflow Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Apple |
| Product | Multiple Products |
| Date added | 2026-03-20 |
| Due date | 2026-04-03 |
| Ransomware campaign use | Unknown |
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 (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://support.apple.com/en-us/125632 ; https://support.apple.com/en-us/125633 ; https://support.apple.com/en-us/125634 ; https://support.apple.com/en-us/125635 ; https://support.apple.com/en-us/125636 ; https://support.apple.com/en-us/125637 ; https://support.apple.com/en-us/125638 ; https://support.apple.com/en-us/125639 ; https://nvd.nist.gov/vuln/detail/CVE-2025-43520
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-43520
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog