CVE-2026-86315: CWE-197 Numeric truncation error in Samsung Opensource Escargot
Description
CVE-2026-86315 is a numeric truncation error vulnerability in Samsung Open Source Escargot on Linux x86-64. It allows an attacker who can supply JavaScript for execution to cause an out-of-bounds write by providing a crafted class definition with an instance initialization entry count exceeding UINT16_MAX. This leads to native memory corruption and a crash of the host process. The vulnerability has a CVSS score of 6.2, indicating medium severity.
CVSS v3.1
Score 6.2medium
Affected software
Samsung Opensource
Escargot
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Samsung Open Source Escargot arises from a numeric truncation error (CWE-197) that causes an out-of-bounds write. Specifically, when a crafted JavaScript class definition includes an instance initialization entry count greater than UINT16_MAX, it triggers memory corruption and crashes the host process on Linux x86-64 systems running Escargot. The affected version is identified by the commit hash 5dc93606abd42b859045add05d704a038e197359. There is no information about a patch or remediation available in the provided data.
Potential Impact
An attacker able to supply JavaScript code for execution can exploit this vulnerability to corrupt native memory and crash the host process. The impact is denial of service (application crash) without direct confidentiality or integrity compromise. There is no indication of code execution or privilege escalation from the provided information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided. Until a patch is available, avoid executing untrusted JavaScript code in the affected Escargot environment.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- samsung.tv_appliance
- Date Reserved
- 2026-09-07T03:41:59.466Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9e3c16acd9273b49ec9d44
Added to database: 09/07/2026, 04:22:46 UTC
Last enriched: 09/15/2026, 01:04:14 UTC
Last updated: 10/22/2026, 01:15:26 UTC
Views: 94
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