CVE-2026-20700—Apple Multiple Buffer Overflow Vulnerability

Vulnerability Name

Apple Multiple Buffer Overflow Vulnerability

Description

Apple iOS, macOS, tvOS, watchOS, and visionOS contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow an attacker with memory write the capability to execute arbitrary code.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Additional Notes

• https://support.apple.com/en-us/126346
• https://support.apple.com/en-us/126348
• https://support.apple.com/en-us/126351
• https://support.apple.com/en-us/126352
• https://support.apple.com/en-us/126353
• https://nvd.nist.gov/vuln/detail/CVE-2026-20700

Related News Articles

• Apple expands iOS 18 updates to more iPhones to block DarkSword attacksApril 1, 2026
• CISA orders feds to patch DarkSword iOS flaws exploited attacksMarch 23, 2026
• DarkSword iOS Exploit Kit Uses 6 Flaws, 3 Zero-Days for Full Device TakeoverMarch 19, 2026
• New DarkSword iOS exploit used in infostealer attack on iPhonesMarch 18, 2026
• Apple Fixes WebKit Vulnerability Enabling Same-Origin Policy Bypass on iOS and macOSMarch 18, 2026

Related Weaknesses

• CWE-119