CVE-2026-20700Apple Multiple Buffer Overflow Vulnerability
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.
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 7.8 | HIGH | 3.1CISA-ADP | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Mar 5, 2026
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2026-20700
- Status
- Analyzed
- Assigner (CNA)
- apple
- Published
- Feb 11, 2026
- Last modified
- 2026-06-17 10:17 UTC
- Weaknesses
Affected Products
As published by the CNA in the CVE record.
AppleiOS and iPadOS1 version range
- before 26.3
ApplemacOS1 version range
- before 26.3
AppletvOS1 version range
- before 26.3
ApplevisionOS1 version range
- before 26.3
ApplewatchOS1 version range
- before 26.3
References
- support.apple.com https://support.apple.com/en-us/126346
- support.apple.com https://support.apple.com/en-us/126348
- support.apple.com https://support.apple.com/en-us/126351
- support.apple.com https://support.apple.com/en-us/126352
- support.apple.com https://support.apple.com/en-us/126353
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700