CVE-2026-58305Public exploit

Process crash via stale fast-mode array access

Published Jul 9, 2026 · Updated Jul 9, 2026

Type confusion in Escargot before 779f6bedf58f334dec64b0a51ebb724b4708b84a allows local users to crash it with crafted JavaScript. The spread slow paths read m_fastModeData directly after a spread array has switched from fast-mode to slow-mode storage, producing an invalid pointer read. Exploitation requires execution of attacker-controlled JavaScript and user interaction; the demonstrated result is process termination, not established code execution.

CVSS severity6.1
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Type confusion in Escargot before 779f6bedf58f334dec64b0a51ebb724b4708b84a allows local users to crash it with crafted JavaScript. The spread slow paths read m_fastModeData directly after a spread array has switched from fast-mode to slow-mode storage, producing an invalid pointer read. Exploitation requires execution of attacker-controlled JavaScript and user interaction; the demonstrated result is process termination, not established code execution.

The record

CVE
CVE-2026-58305
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
Samsung Electronics Co., Ltd.
Product
Escargot
Classifications
CWE-843, CAPEC-129
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <779f6bedf58f334dec64b0a51ebb724b4708b84a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Escargotversion=0 <779f6bedf58f334dec64b0a51ebb724b4708b84a

Published CVSS scores

6.1Samsung TV & Appliance CNACVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
CAPEC-129Pointer Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo