All vulnerabilities
CVE-2026-20700

Apple Multiple Buffer Overflow Vulnerability

Apple Multiple Products
Open in ThreatlineRecord JSON
CVSS
7.8High
ExploitationExploited in the wildAdded to KEV 12 Feb 2026CISA KEV
Exploit odds (EPSS)1.39%Chance of exploitation activity in the next 30 days, higher than 72% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in26.3Fixed versionCVE List
Federal deadline5 Mar 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 11 Feb 2026, 22:58 UTCPublishedCVE List
  2. 12 Feb 2026Added to CISA KEVCISA KEV

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.

Text from CVE List

Affected versions 5

  • iOS and iPadOSaffected: all versions before 26.3CVE List
  • macOSaffected: all versions before 26.3CVE List
  • tvOSaffected: all versions before 26.3CVE List
  • visionOSaffected: all versions before 26.3CVE List
  • watchOSaffected: all versions before 26.3CVE List

References 7