Electron has ASAR Integrity Bypass via resource modification
### Impact This only impacts apps that have the `embeddedAsarIntegrityValidation` and `onlyLoadAppFromAsar` [fuses](https://www.electronjs.org/docs/latest/tutorial/fuses) enabled. Apps without these fuses enabled are not impacted. Specifically this issue can only be exploited if your app is launched from a filesystem the attacker has write access too. i.e. the ability to edit files inside the `resources` folder in your app installation on Windows which these fuses are supposed to protect against. ### Workarounds There are no app side workarounds, you must update to a patched version of Electron. ### Fixed Versions * `38.0.0-beta.6` * `37.3.1` * `36.8.1` * `35.7.5` ### For more information If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-55305US | — | — | ||
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. In versions below 35.7.5, 36.0.0-alpha.1 through 36.8.0, 37.0.0-alpha.1 thro… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/electron/electronPACKAGE
- https://github.com/electron/electron/commit/23a02934510fcf951428e14573d9b2d2a3c4f28bWEB
- https://github.com/electron/electron/commit/2e5a0b7220ebf955c6785cc5adb2e2b1cf77dac1WEB
- https://github.com/electron/electron/commit/3f92511cdecc39f46b0e86cce40a0c691e301c9dWEB
- https://github.com/electron/electron/commit/fdf29ce83870109d403f5c23ae529dbd0e8f4feeWEB
- https://github.com/electron/electron/pull/48101WEB
- https://github.com/electron/electron/pull/48102WEB
- https://github.com/electron/electron/pull/48103WEB
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