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CVE-2026-34770 Electronjs CVE debrief

CVE-2026-34770 is a high-severity use-after-free vulnerability in Electron, a framework for building cross-platform desktop applications. The vulnerability exists in the powerMonitor module and may allow attackers to cause a crash or memory corruption. Electron versions prior to 38.8.6, 39.8.1, 40.8.0, and 41.0.0-beta.8 are affected. This vulnerability is not directly renderer-controllable. The issue arises when the native PowerMonitor object is garbage-collected, leaving dangling references to OS-level resources. A subsequent session-change event or system shutdown can then dereference the freed memory, leading to a crash or memory corruption.

Vendor
Electronjs
Product
Electron
CVSS
HIGH 7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-04
Original CVE updated
2026-07-24
Advisory published
2026-04-04
Advisory updated
2026-07-24

Who should care

Developers and users of Electron applications that utilize the powerMonitor module should be aware of this vulnerability and take steps to mitigate it. This includes updating to a patched version of Electron and monitoring for potential attacks. Additionally, security teams and operators should review their application versions and ensure that they are running a patched version of Electron.

Technical summary

The vulnerability exists in the powerMonitor module of Electron, which is used to monitor system events such as suspend, resume, and lock-screen. When the native PowerMonitor object is garbage-collected, the associated OS-level resources retain dangling references. A subsequent session-change event or system shutdown can then dereference the freed memory, leading to a crash or memory corruption. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.0, and 41.0.0-beta.8 of Electron.

Defensive priority

High

Recommended defensive actions

  • Update Electron to version 38.8.6, 39.8.1, 40.8.0, or 41.0.0-beta.8 or later
  • Monitor for potential attacks using the powerMonitor module
  • Implement additional security measures such as memory protection and address space layout randomization
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-04-04T00:16:17.823Z and last modified on 2026-07-24T22:10:00.140Z. The NVD entry is currently Analyzed. The Electron framework versions prior to 38.8.6, 39.8.1, 40.8.0, and 41.0.0-beta.8 are affected by this vulnerability. Developers and users should verify their application versions and update to a patched version as soon as possible.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-04T00:16:17.823Z and has not been modified since then.