Executive brief
Samsung Escargot, an open-source JavaScript engine often used in smart TVs and appliances, contains a vulnerability that can cause the engine to crash. By providing specifically crafted input data, an attacker could trigger an unhandled error condition that leads to a denial-of-service. This could result in application instability or the failure of services relying on the JavaScript engine.
Technical details
A vulnerability classified as CWE-703 (Improper Check or Handling of Exceptional Conditions) exists in the Samsung Escargot JavaScript engine. The issue stems from a failure to properly validate pointers before dereferencing them, specifically in components like EscargotPublic.cpp, BuiltinTypedArray.cpp, and JSON.cpp. In certain edge cases, such as nested eval throws with finally allocations, an error value may be null; dereferencing this null pointer leads to a process crash. An attacker can exploit this by providing malicious JavaScript input that triggers these exceptional states. A fix has been identified in pull request #1565 which introduces necessary null checks.
Affected products
- Samsung Escargot 590345cc6258317c5da850d846ce6baaf2afc2d3
Timeline
- 2026-04-28: other: Fix pull request initiated on GitHub
- 2026-05-14: patched: Fix merged into master branch
- 2026-05-19: disclosed: CVE published by Samsung TV & Appliance