CVE-2026-70598

Memory disclosure or crash via unchecked frame geometry

Published Aug 5, 2026 · Updated Aug 5, 2026

Out-of-bounds read in affected Electron releases allows local users to disclose main-process memory or crash an offscreen-rendering app. OffScreenVideoConsumer::OnFrameCaptured sizes an SkBitmap from GPU-supplied content_rect without ensuring the geometry and required bytes fit coded_size and the shared-memory mapping. Reachability requires webPreferences.offscreen and prior code execution in the GPU process; the bounded outcomes are memory disclosure and an application crash.

CVSS severity3.9
Low
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in affected Electron releases allows local users to disclose main-process memory or crash an offscreen-rendering app. OffScreenVideoConsumer::OnFrameCaptured sizes an SkBitmap from GPU-supplied content_rect without ensuring the geometry and required bytes fit coded_size and the shared-memory mapping. Reachability requires webPreferences.offscreen and prior code execution in the GPU process; the bounded outcomes are memory disclosure and an application crash.

The record

CVE
CVE-2026-70598
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Electron
Product
Electron
Classifications
CWE-125
Attack vector
local
Privileges
admin

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=< 39.8.10
  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 privilegesadmin

What is affected?

Electron · Electronversion=< 39.8.10; 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

3.9GitHubCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

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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