Apple CVE-2026-34770

Requires Electron application using the powerMonitor module with event listeners (suspend, resume, lock-screen). Exploitation triggered by system session change (Windows) or shutdown (macOS). Requires local user interaction (system event). User must run vulnerable application.

Real-world risk is MODERATE despite the 7.0 CVSS score. The CVSS vector (AV:L/AC:H/PR:N/UI:R) indicates several mitigating factors: local access is required, attack complexity is high, and user interaction is necessary. No public exploit identified at time of analysis and no CISA KEV listing indicates this is not being actively exploited. The high attack complexity stems from needing to trigger garbage collection of the PowerMonitor object while simultaneously inducing specific OS power events-a difficult timing window to control reliably. The requirement for user interaction (system shutdown, sleep, or session change) further reduces exploitability. However, the potential impact is significant (C:H/I:H/A:H) as successful exploitation could enable memory corruption leading to code execution with the application's privileges. Priority should be MEDIUM for most organizations: the vulnerability affects a widely-deployed framework (Electron powers major applications like VS Code, Slack, Discord), patches are readily available across multiple version branches, and the fix requires only an Electron version upgrade. Organizations running Electron applications in high-security environments or multi-user systems should prioritize patching, while those with standard desktop deployments can remediate during normal maintenance windows. The issue is not renderer-controllable, meaning web content cannot directly trigger the vulnerability, which significantly reduces the attack surface compared to typical Electron security issues.

A local attacker with access to a system running a vulnerable Electron application could potentially exploit this vulnerability by first triggering JavaScript garbage collection of the powerMonitor object through memory pressure or application state manipulation, then inducing a system power event. On Windows, this could involve forcing a session change (lock/unlock, user switching) while on macOS, initiating a system shutdown or sleep cycle. If timing is precise, the OS-level event handler fires after the PowerMonitor object has been freed, dereferencing invalid memory. In a crash scenario, this causes application termination and potential denial of service. In a more sophisticated attack, if the attacker can control heap allocation to place malicious data in the freed memory region, the use-after-free could potentially be leveraged for arbitrary code execution with the application's privileges. Publicly available exploit code exists in the form of technical details in the GitHub advisory, though no weaponized proof-of-concept has been identified. The high attack complexity and requirement for local access with specific timing significantly limit practical exploitation in most deployment scenarios.