Apple · Multiple Products
CVE-2026-20700
Apple Multiple Buffer Overflow Vulnerability
概要
A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker with memory write capability may be able to execute arbitrary code. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 and CVE-2025-43529 were also issued in response to this report.
CISA: Apple iOS, macOS, tvOS, watchOS, and visionOS contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow an attacker with memory write the capability to execute arbitrary code.
対処法
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
米国連邦機関の対応期限：2026年3月5日
Appleのその他の悪用された脆弱性
| 追加日 | 脆弱性 | 製品 | 深刻度 | 攻撃の可能性 |
|---|---|---|---|---|
| 2026/11/04 | Improper Authentication | Multiple Products | 中 5.5 | 1.5% |
| 2026/09/29 | Out-of-Bounds Write | Multiple Products | 高 8.8 | 26% |
| 2026/03/20 | Buffer Overflow | Multiple Products | 高 8.8 | 1.7% |
| 2026/03/20 | Improper Locking | Multiple Products | 高 7.8 | 0.4% |
| 2026/03/20 | Classic Buffer Overflow | Multiple Products | 中 5.5 | 0.4% |
| 2026/03/05 | Integer Overflow or Wraparound | Multiple Products | 高 8.8 | 7.0% |
| 2026/03/05 | Use-After-Free | Multiple Products | 高 8.8 | 4.0% |
| 2025/12/15 | Use-After-Free WebKit | Multiple Products | 高 8.8 | 26% |
出典：Known Exploited Vulnerabilities（CISA、パブリックドメイン）、CVE records（cve.org）、EPSS（FIRST）。攻撃の可能性は、今後30日以内に誰かがその脆弱性の悪用を試みるというEPSSの推定値です。