An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.
HFS2 version 2.4.0 and earlier contains a template injection vulnerability in the multipart upload handler that allows unauthenticated attackers to achieve remote code execution by embedding malicious template syntax in a filename. Attackers can craft a filename containing a closing template quoting sequence followed by an exec macro, which bypasses the authorization check in the dispatcher to execute arbitrary commands on the underlying host system.
| Version | Type | Source | Base | Exp | Imp |
|---|---|---|---|---|---|
| 3.1 | Primary | cve.org | 10.0 | — | — |
| 3.1 | Primary | NVD | 10.0 | 3.9 | 6.0 |
| 4.0 | Primary | cve.org | 10.0 | — | — |
| 4.0 | Secondary | NVD | 10.0 | — | — |
| 4.0 | Secondary | ENISA EUVD | 10.0 | — | — |