Crash or memory corruption via dangling PowerMonitor references
Published Apr 3, 2026 · Updated Apr 3, 2026
Use-after-free in affected Electron releases allows local users to crash apps or corrupt memory through powerMonitor events. The native PowerMonitor object can be garbage-collected while a Windows message window or macOS shutdown handler retains a dangling reference that later dereferences freed memory. Exploitation requires a vulnerable app to access powerMonitor and a later session change or shutdown; renderer content cannot directly trigger the flaw.
Summary
What happened
Use-after-free in affected Electron releases allows local users to crash apps or corrupt memory through powerMonitor events. The native PowerMonitor object can be garbage-collected while a Windows message window or macOS shutdown handler retains a dangling reference that later dereferences freed memory. Exploitation requires a vulnerable app to access powerMonitor and a later session change or shutdown; renderer content cannot directly trigger the flaw.
The record
- CVE
- CVE-2026-34770
- Published
- Apr 3, 2026
- Updated
- Apr 3, 2026
- Vendor
- Electron
- Product
- Electron
- Classifications
- CWE-416
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 3, 2026CVE publishedPublication date reported by the CVE source.
- Apr 3, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 38.8.6
- Affected versionversion=>= 39.0.0-alpha.1, < 39.8.1
- Affected versionversion=>= 40.0.0-alpha.1, < 40.8.0
- Affected versionversion=>= 41.0.0-alpha.1, < 41.0.0-beta.8
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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