CVE-2026-14160: Samsung Escargot TOCTOU race condition in Atomics operations

CVE-2026-14160 · Severity: medium · CVSS 5.9 · Published 2026-06-30

Samsung Escargot, an open-source JavaScript engine, contains a flaw in how it handles memory buffers during certain operations. An attacker could exploit this to cause a system crash or potentially access data they shouldn't be able to see. This could impact the reliability of applications using this engine and lead to minor data exposure.

Technologies: Samsung Escargot. Vendors: Samsung.

Quick answers

Is CVE-2026-14160 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-14160 being exploited in the wild.
How severe is CVE-2026-14160?
Medium severity, with a CVSS score of 5.9, published 30 June 2026.
Which products and versions are affected?
Samsung Escargot bab3a5797557014ce3c2e28419a6310cfba90d0d.
Is there a fix for CVE-2026-14160?
A patch was published on 2026-06-29: Fix committed to GitHub repository Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-14160 attacked?
It is attacked with local access, in a software library.
Am I affected by CVE-2026-14160?
Check whether you run Samsung Escargot at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Time-of-check time-of-use (TOCTOU) race condition exists in Samsung's Escargot JavaScript engine. The vulnerability is rooted in the engine's failure to revalidate ArrayBuffer status and bounds after user-controlled code execution (such as valueOf coercion) during Atomics operations. An attacker can exploit this by detaching or resizing a buffer during the coercion phase, leading to out-of-bounds (OOB) access when the operation resumes. This local attack vector allows for potential information disclosure or integrity violations. A fix has been identified in commit 9e8084e which introduces the revalidateAtomicAccess helper to verify buffer state before memory access.

Affected products

  • Samsung Escargot bab3a5797557014ce3c2e28419a6310cfba90d0d

Timeline

  • 2026-06-30: advisory: NVD publication date
  • 2026-06-29: patched: Fix committed to GitHub repository

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.