MSRXCVE-2026-20700
CVE-2026-20700
Apple Multiple Buffer Overflow Vulnerability
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CVSS 3.1 · CNA
chance of exploitation in the next 30 days (EPSS; higher than 76% of CVEs)
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.
Scores
Affected products
- apple ipados: < 26.3
- apple iphone os: < 26.3
- apple macos: < 26.3
- apple tvos: < 26.3
- apple visionos: < 26.3
- apple watchos: < 26.3
Weakness: CWE-119
6 references (advisories, patches, write-ups)
- https://support.apple.com/en-us/126346 · Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126348 · Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126351 · Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126352 · Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126353 · Release Notes, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700 · US Government Resource
Sources: NVD, CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.