CVE-2026-40446Public exploit

Local pointer manipulation via forged serialized pointer

Published Apr 13, 2026 · Updated Apr 13, 2026

Type confusion in Escargot revision 97e8115ab1110bc502b4b5e4a0c689a71520d335 allows local users to manipulate pointers via serialized input. SerializedSharedArrayBufferObjectValue::deserializeFrom treats an attacker-supplied integer as a SharedDataBlockInfo pointer and dereferences it without validation. Reachability requires a local caller or embedding application to pass crafted data to the public Serializer API; observed outcomes include an invalid write and process crash.

CVSS severity9.8
Critical
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in Escargot revision 97e8115ab1110bc502b4b5e4a0c689a71520d335 allows local users to manipulate pointers via serialized input. SerializedSharedArrayBufferObjectValue::deserializeFrom treats an attacker-supplied integer as a SharedDataBlockInfo pointer and dereferences it without validation. Reachability requires a local caller or embedding application to pass crafted data to the public Serializer API; observed outcomes include an invalid write and process crash.

The record

CVE
CVE-2026-40446
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
Samsung Electronics Co., Ltd.
Product
Escargot
Classifications
CWE-843, CAPEC-129, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=97e8115ab1110bc502b4b5e4a0c689a71520d335

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Escargotversion=97e8115ab1110bc502b4b5e4a0c689a71520d335

Published CVSS scores

6.9Samsung TV & ApplianceCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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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
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

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Your stack

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