A memory corruption issue was addressed with improved state management.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 26.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Apple operating systems for iPhone, iPad, Mac, Apple TV, Apple Vision Pro, and Apple Watch are affected. An attacker who can write to device memory could use this flaw to run arbitrary code.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
Affected versions
- Apple iOS and iPadOS
fixed in 26.3
- Apple macOS
fixed in 26.3
- Apple tvOS
fixed in 26.3
- Apple visionOS
fixed in 26.3
- Apple watchOS
fixed in 26.3
References 5
support.apple.com
Questions about CVE-2026-20700
What does this mean?
A memory corruption flaw in Apple's operating systems could let an attacker who already has memory write capability potentially run arbitrary code. Apple's advisory says the issue was addressed with improved state management.Source: support.apple.com
Am I affected, and how do I check?
The facts list iOS, iPadOS, macOS, tvOS, visionOS and watchOS versions before 26.3 as affected. To check a device, look at its current version under Settings > General > About on iPhone or iPad, or About This Mac on a Mac.Source: support.apple.com
What should I do about it?
Update to iOS 26.3, iPadOS 26.3, or the matching 26.3 release for macOS, tvOS, visionOS or watchOS. No workaround is listed in the facts.Source: support.apple.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-02-12, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data