CVE-2026-20700 Details
Description
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.
A memory corruption vulnerability has been identified in multiple Apple products, including iOS, iPadOS, macOS Tahoe, watchOS, tvOS, and visionOS, all in version 26.3. This vulnerability allows an attacker with memory write capabilities to execute arbitrary code. Notably, there are reports of this vulnerability being exploited in a sophisticated attack targeting specific individuals on versions of iOS prior to the release of iOS 26.
Users can update to the latest version of the operating system to address this vulnerability. Instructions for updating can be found on the Apple Support website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Feb 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700 | CISA-ADP | US Government Resource |
| https://support.apple.com/en-us/126346 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/126348 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/126351 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/126352 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/126353 | [email protected] | Release NotesVendor Advisory |
This CVE is in CISA's Known Exploited Vulnerabilities Catalog
Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.
| Vulnerability Name | Date Added | Due Date | Required Action |
|---|---|---|---|
| Apple Multiple Buffer Overflow Vulnerability | Feb 12, 2026 | 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. |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| apple ipados | < 26.3 |
CPE
Remediation
| |
| apple iphone os | < 26.3 |
CPE
Remediation
| |
| apple macos | < 26.3 |
CPE
Remediation
| |
| apple tvos | < 26.3 |
CPE
Remediation
| |
| apple visionos | < 26.3 |
CPE
Remediation
| |
| apple watchos | < 26.3 |
CPE
Remediation
| |
Change History
9 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Mar 25, 2026 | Modified Analysis | [email protected] |
| Mar 25, 2026 | CVE Modified | [email protected] |
| Feb 13, 2026 | Modified Analysis | [email protected] |
| Feb 12, 2026 | CVE Modified | CISA-ADP |
| Feb 12, 2026 | Initial Analysis | [email protected] |
| Feb 12, 2026 | CVE Modified | CISA-ADP |
| Feb 11, 2026 | New CVE Received | [email protected] |