CVE-2026-20700: listed in the CISA KEV catalog

CVE-2026-20700 · CVSS 7.8 HIGH · EPSS 1% · KEV 2026-02-12 · patch available

A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, visionOS 26.3, iOS 26.3 and iPadOS 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.

Is CVE-2026-20700 exploited?

• Listed in the CISA KEV catalog on 2026-02-12.
• Federal remediation due 2026-03-05.
• Past that date by 210 days.
• EPSS puts exploitation in the next 30 days at 1%.
• Public exploit code: none found in monitored sources.

Which products and versions are affected?

• Apple · macOS · Sonoma <14.8.4
• Apple · macOS · Sequoia <15.7.4
• Apple · macOS · Tahoe <26.3
• Apple · iOS and iPadOS · >= 0, < 26.3
• Apple · macOS · >= 0, < 26.3
• Apple · tvOS · >= 0, < 26.3
• Apple · visionOS · >= 0, < 26.3
• Apple · watchOS · >= 0, < 26.3
• apple · iphone os · < 26.3

Is there a patch?

• macOS Sonoma 14.8.4
• macOS Sequoia 15.7.4
• macOS Tahoe 26.3
• iphone os 26.3

What PlainSec published about CVE-2026-20700

• Coruna and DarkSword Go Mass-Market (2026-08-10)

Primary sources

• NVD record
• CISA KEV catalog

KEV and EPSS are re-checked daily. Record last updated 2026-09-12.