Out-of-Bounds Write Vulnerability in Apple Products
CVE-2026-86918

4.3MEDIUM

Key Information:

Vendor

Apple
Status
iOS And iPad OS
Mac OS
TV OS
Visionos
Vendor
CVE Published:
20 October 2026

What is CVE-2026-86918?

An out-of-bounds write vulnerability has been identified in several Apple operating systems, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. This vulnerability arises when a maliciously crafted image is processed, potentially leading to unexpected app termination. Apple has implemented improved bounds checking to remediate this issue in version 27 of their respective operating systems, thereby enhancing the security and stability of affected applications. It is crucial for users to update to the latest versions to mitigate risks associated with this vulnerability.

Affected Version(s)

iOS and iPadOS 0 < 27

macOS 0 < 27

tvOS 0 < 27

References

https://support.apple.com/en-us/149034
https://support.apple.com/en-us/149035
https://support.apple.com/en-us/149036

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.