Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2021-39184

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. A vulnerability in versions prior to 11.5.0, 12.1.0, and 13.3.0 allows a sandboxed renderer to request a "thumbnail" image of an arbitrary file on the user's system. The thumbnail can potentially include significant parts of the original file, including textual data in many cases. Versions 15.0.0-alpha.10, 14.0.0, 13.3.0, 12.1.0, and 11.5.0 all contain a fix for the vulnerability. Two workarounds aside from upgrading are available. One may make the vulnerability significantly more difficult for an attacker to exploit by enabling contextIsolation in one's app. One may also disable the functionality of the createThumbnailFromPath API if one does not need it.

CVSS v3:

  • Severity: Medium
  • Score: 6.8
  • AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
Software From Fixed in
electronjs / electron 15.0.0-alpha1 15.0.0-alpha1.x
electronjs / electron 15.0.0-alpha2 15.0.0-alpha2.x
electronjs / electron 15.0.0-alpha3 15.0.0-alpha3.x
electronjs / electron 15.0.0-alpha4 15.0.0-alpha4.x
electronjs / electron 15.0.0-alpha5 15.0.0-alpha5.x
electronjs / electron 15.0.0-alpha6 15.0.0-alpha6.x
electronjs / electron 15.0.0-alpha7 15.0.0-alpha7.x
electronjs / electron 15.0.0-alpha8 15.0.0-alpha8.x
electronjs / electron 15.0.0-alpha9 15.0.0-alpha9.x
electronjs / electron 14.0.0-beta1 14.0.0-beta1.x
electronjs / electron 14.0.0-beta2 14.0.0-beta2.x
electronjs / electron 14.0.0-beta3 14.0.0-beta3.x
electronjs / electron 14.0.0-beta4 14.0.0-beta4.x
electronjs / electron 14.0.0-beta5 14.0.0-beta5.x
electronjs / electron 14.0.0-beta6 14.0.0-beta6.x
electronjs / electron 14.0.0-beta7 14.0.0-beta7.x
electronjs / electron 14.0.0-beta8 14.0.0-beta8.x
electronjs / electron 14.0.0-beta9 14.0.0-beta9.x
electronjs / electron 14.0.0-beta10 14.0.0-beta10.x
electronjs / electron 14.0.0-beta11 14.0.0-beta11.x
electronjs / electron 14.0.0-beta12 14.0.0-beta12.x
electronjs / electron 14.0.0-beta13 14.0.0-beta13.x
electronjs / electron 14.0.0-beta14 14.0.0-beta14.x
electronjs / electron 14.0.0-beta15 14.0.0-beta15.x
electronjs / electron 14.0.0-beta16 14.0.0-beta16.x
electronjs / electron 14.0.0-beta17 14.0.0-beta17.x
electronjs / electron 14.0.0-beta18 14.0.0-beta18.x
electronjs / electron 14.0.0-beta19 14.0.0-beta19.x
electronjs / electron 14.0.0-beta20 14.0.0-beta20.x
electronjs / electron 14.0.0-beta21 14.0.0-beta21.x
electronjs / electron 14.0.0-beta22 14.0.0-beta22.x
electronjs / electron 14.0.0-beta23 14.0.0-beta23.x
electronjs / electron 14.0.0-beta24 14.0.0-beta24.x
electronjs / electron 14.0.0-beta25 14.0.0-beta25.x
electronjs / electron 13.0.0 13.3.0
electronjs / electron 12.0.0 12.1.0
electronjs / electron 10.1.0 11.5.0
Node.js icon electron - 11.5.0
Node.js icon electron 12.0.0 12.1.0
Node.js icon electron 13.0.0 13.3.0

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.