CVE-2026-20700A memory corruption issue was addressed with improved state management.
Updated under an hour ago ()
Does this affect you?
It affects Apple iOS and iPadOS and 6 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Feb 12, 2026; federal agencies had to remediate by Mar 5, 2026. Treat that date as your deadline.
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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.
- CVSS
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-119
- Known exploited
- Added to CISA KEV Feb 12, 2026; federal remediation due Mar 5, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 1.39% (percentile 72)
- Assigned by
- apple
- NVD analysis
- Analyzed
- Record last updated
- Apr 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apple iOS and iPadOS apple:ios_and_ipados (from the name) | before 26.3 | CNA record |
Apple macOS apple:macos (from the name) | before 26.3 | CNA record |
Apple tvOS apple:tvos (from the name) | before 26.3 | CNA record |
Apple visionOS apple:visionos (from the name) | before 26.3 | CNA record |
Apple watchOS apple:watchos (from the name) | before 26.3 | CNA record |
apple ipados apple:ipados | before 26.3 | NVD |
apple iphone_os apple:iphone_os | before 26.3 | NVD |
apple macos apple:macos | before 26.3 | NVD |
apple tvos apple:tvos | before 26.3 | NVD |
apple visionos apple:visionos | before 26.3 | NVD |
apple watchos apple:watchos | before 26.3 | NVD |
References
- https://support.apple.com/en-us/126346release-notes, vendor-advisory
- https://support.apple.com/en-us/126348release-notes, vendor-advisory
- https://support.apple.com/en-us/126351release-notes, vendor-advisory
- https://support.apple.com/en-us/126352release-notes, vendor-advisory
- https://support.apple.com/en-us/126353release-notes, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.