CVE-2026-70597

Local code execution via parent PID race

Published Aug 5, 2026 · Updated Aug 5, 2026

A TOCTOU race in affected Electron releases allows local users to run code inside a signed macOS app via a spoofed parent process. The parent code-signature check uses a mutable process identifier rather than binding verification to the macOS audit token, allowing the checked identity to change before use. Exposure requires fuse-based restrictions for ELECTRON_RUN_AS_NODE or NODE_OPTIONS; successful exploitation inherits the app's TCC permissions and keychain access.

CVSS severity6.3
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A TOCTOU race in affected Electron releases allows local users to run code inside a signed macOS app via a spoofed parent process. The parent code-signature check uses a mutable process identifier rather than binding verification to the macOS audit token, allowing the checked identity to change before use. Exposure requires fuse-based restrictions for ELECTRON_RUN_AS_NODE or NODE_OPTIONS; successful exploitation inherits the app's TCC permissions and keychain access.

The record

CVE
CVE-2026-70597
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Electron
Product
Electron
Classifications
CWE-367, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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.

  1. Affected versionversion=< 39.8.8
  2. Affected versionversion=>= 40.0.0-alpha.1, < 40.9.0
  3. Affected versionversion=>= 41.0.0-alpha.1, < 41.2.1
  4. Affected versionversion=>= 42.0.0-alpha.1, < 42.0.0-beta.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Electron · Electronversion=< 39.8.8; version=>= 40.0.0-alpha.1, < 40.9.0; version=>= 41.0.0-alpha.1, < 41.2.1; version=>= 42.0.0-alpha.1, < 42.0.0-beta.3

Published CVSS scores

6.3GitHub, Inc.CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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