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CVE-2023-28206 Apple CVE debrief

CVE-2023-28206 is an Apple IOSurfaceAccelerator out-of-bounds write affecting iOS, iPadOS, and macOS. CISA added it to the Known Exploited Vulnerabilities catalog on 2023-04-10, which means defenders should treat it as actively exploited and prioritize vendor updates.

Vendor
Apple
Product
iOS, iPadOS, and macOS
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2023-04-10
Original CVE updated
2023-04-10
Advisory published
2023-04-10
Advisory updated
2023-04-10

Who should care

Apple device administrators, mobile endpoint teams, macOS fleet owners, and security operations teams responsible for iOS, iPadOS, or macOS patching.

Technical summary

The supplied sources identify CVE-2023-28206 as an out-of-bounds write in IOSurfaceAccelerator. CISA’s KEV entry classifies it as known exploited and directs organizations to apply updates per vendor instructions.

Defensive priority

High

Recommended defensive actions

  • Apply Apple security updates for affected iOS, iPadOS, and macOS versions as soon as possible.
  • Prioritize remediation for internet-facing, high-value, and unmanaged Apple devices first.
  • Confirm device inventory and patch status across all Apple fleets, including mobile and workstation endpoints.
  • Use the vendor instructions referenced by CISA to validate that the correct Apple fix has been deployed.
  • Track remediation against the KEV due date and escalate any systems that cannot be updated quickly.

Evidence notes

The source corpus includes CISA KEV metadata for CVE-2023-28206, with a dateAdded of 2023-04-10 and dueDate of 2023-05-01. CISA’s notes reference Apple support pages HT213720 and HT213721 as vendor instructions, and the corpus also provides the official CVE.org and NVD record links.

Official resources

Publicly listed by CISA as a known exploited vulnerability on 2023-04-10; use this date as the operational urgency marker for remediation.