Integer Overflow Vulnerability in Safari and Apple Operating Systems
CVE-2026-65390

8.8HIGH

Key Information:

Vendor

Apple
Status
Safari
iOS And iPad OS
Mac OS
TV OS
Vendor
CVE Published:
14 September 2026

What is CVE-2026-65390?

An integer overflow vulnerability has been reported, affecting the Safari browser and various Apple operating systems. This flaw arises from insufficient input validation, allowing maliciously crafted web content to potentially lead to memory corruption. Users are encouraged to update to the latest versions of Safari and the respective operating systems to mitigate the risks associated with this vulnerability.

Affected Version(s)

iOS and iPadOS 0 < 26.6.1

macOS 0 < 26.6.2

Safari 0 < 26.6.1

References

https://support.apple.com/en-us/148281
https://support.apple.com/en-us/148282
https://support.apple.com/en-us/148286

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.