CVE-2024-29900Network attack vector

Secret disclosure via oversized integrity buffer

Published Mar 29, 2024 · Updated Aug 2, 2024

Information disclosure in Electron Packager 18.3.0 allows remote attackers to recover Node.js heap data from a generated executable. The Windows resource-editing path passes the backing ArrayBuffer of a serialized ASAR-integrity Buffer, embedding bytes beyond the intended data. A build must enable ASAR integrity and package a Windows target; the extra 1–10 KB can expose environment variables or secret-file contents to anyone obtaining the executable.

CVSS severity7.5
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Electron Packager 18.3.0 allows remote attackers to recover Node.js heap data from a generated executable. The Windows resource-editing path passes the backing ArrayBuffer of a serialized ASAR-integrity Buffer, embedding bytes beyond the intended data. A build must enable ASAR integrity and package a Windows target; the extra 1–10 KB can expose environment variables or secret-file contents to anyone obtaining the executable.

The record

CVE
CVE-2024-29900
Published
Mar 29, 2024
Updated
Aug 2, 2024
Vendor
Electron
Product
Electron Packager
Classifications
CWE-402, T1552.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion== 18.3.0
  2. Affected versionversion=18.3.0 <18.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Electron · Electron Packagerversion== 18.3.0; version=18.3.0 <18.3.1

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-402Transmission of Private Resources into a New Sphere ('Resource Leak')
T1552.001Unsecured Credentials: Credentials In Files

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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