---
id: CVE-2026-86315
title: >-
  An out-of-bounds write caused by numeric truncation  Samsung Open Source
  Escargot on Linux x86-64 allows an attacker who can supply JavaScript for
  execution to corrupt native memory and crash the host process via a crafted
  class definiti…
summary: >-
  An out-of-bounds write caused by numeric truncation  Samsung Open Source
  Escargot on Linux x86-64 allows an attacker who can supply JavaScript for
  execution to corrupt native memory and crash the host process via a crafted
  class definiti…
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-197
  - CWE-787
vendor: Samsung Opensource
product: Escargot
affected:
  - Escargot 5dc93606abd42b859045add05d704a038e197359
published: '2026-09-07'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T19:09:50.263'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86315'
references:
  - url: 'https://github.com/Samsung/escargot/pull/1660'
    label: PSIRT@samsung.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86315.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-86315'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2529280'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-86315'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86315'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00172
epssPercentile: 0.05871
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T14:53:36.881610Z'
ingestedAt: '2026-09-08T15:33:26.974Z'
---

## Overview

An out-of-bounds write caused by numeric truncation  Samsung Open Source Escargot on Linux x86-64 allows an attacker who can supply JavaScript for execution to corrupt native memory and crash the host process via a crafted class definition whose instance initialization entry count exceeds UINT16_MAX.



This issue affects Escargot: 5dc93606abd42b859045add05d704a038e197359.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: OpenShift Lightspeed, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux AI (RHEL AI) 3, … · no fix planned: OpenShift Lightspeed, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-07 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86315.json)