Host-process crash via truncated class initializer count
Published Sep 7, 2026 · Updated Sep 8, 2026
Out-of-bounds write in Samsung Escargot allows local users to crash the host process by executing a crafted class definition. In commit 5dc93606abd42b859045add05d704a038e197359, an instance initialization entry count above 65,535 is truncated before native-buffer writes. The affected path is documented only on Linux x86-64, and exploitation requires the ability to supply JavaScript to an Escargot embedding or shell.
Summary
What happened
Out-of-bounds write in Samsung Escargot allows local users to crash the host process by executing a crafted class definition. In commit 5dc93606abd42b859045add05d704a038e197359, an instance initialization entry count above 65,535 is truncated before native-buffer writes. The affected path is documented only on Linux x86-64, and exploitation requires the ability to supply JavaScript to an Escargot embedding or shell.
The record
- CVE
- CVE-2026-86315
- Published
- Sep 7, 2026
- Updated
- Sep 8, 2026
- Vendor
- Samsung Electronics Co., Ltd.
- Product
- Escargot
- Classifications
- CWE-197, CAPEC-100, T1499.004
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 7, 2026CVE publishedPublication date reported by the CVE source.
- Sep 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
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- Affected versionversion=5dc93606abd42b859045add05d704a038e197359
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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