CVE-2026-43696 in macOS
Summary
by MITRE • 09/15/2026
An authorization issue was addressed with improved entitlement checks. This issue is fixed in macOS Golden Gate 27. An app may be able to capture Touch Bar content without authorization.
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Analysis
by VulDB Data Team • 09/15/2026
The vulnerability described represents a critical failure in the operating system's access control mechanisms, specifically concerning the secure interaction between applications and hardware components managed by Apple Silicon Macs. This issue falls under the category of improper privilege management, where an application is granted permissions it should not possess based on its declared intent or user consent. In the context of macOS security architecture, such flaws are typically classified under CWE-269 Improper Privilege Management or more specifically CWE-732 Incorrect Permission Assignment for Critical Resource when referring to the specific hardware interface involved. The core technical flaw lies in the entitlement checking process during runtime execution. When an application requests access to sensitive system resources, macOS is supposed to verify that the app's code signature includes the necessary entitlements and that the user has explicitly granted permission through a privacy prompt or configuration profile. In this instance, the validation logic failed to enforce these restrictions for the Touch Bar subsystem, allowing any running process to bypass standard authorization gates.
The operational impact of this vulnerability is significant due to the sensitive nature of the data displayed on the Touch Bar. The Touch Bar serves as an interactive display that often shows contextual information including passkeys, password fields, two-factor authentication codes, and other private user inputs. By capturing content from the Touch Bar without authorization, a malicious actor could potentially exfiltrate credentials or observe confidential actions in real-time. This capability effectively bypasses multi-factor authentication protections if the second factor is displayed on the bar, leading to potential account compromise. From an adversary perspective, this aligns with ATT&CK technique T1056 Input Capture which includes keylogging and GUI input capture methods. The ability to silently record screen content or specific UI elements without detection undermines the trust model of the operating system and poses a severe risk to user privacy and data integrity.
This flaw was addressed in macOS Golden Gate 27 through improved entitlement checks within the kernel extensions responsible for managing hardware interfaces. The fix likely involves stricter validation of code signatures against required privileges before allowing access to the Touch Bar driver layer. It ensures that only applications with explicitly declared and verified entitlements can interact with this subsystem, thereby preventing unauthorized processes from querying or recording display data. To mitigate similar risks in environments where updates may be delayed, administrators should ensure that application sandboxing is enabled for all third-party software. Additionally, users should review app permissions regularly through System Settings to revoke access for applications that do not require such privileges. Keeping the operating system updated to the latest version remains the primary defense against this class of vulnerabilities as it patches the underlying kernel-level enforcement mechanisms.