Cyber Resilience

CVE-2026-47311

HighUpdated

Published: 19 May 2026

Published
19 May 2026
Modified
02 June 2026
KEV Added
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Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0029 20.4th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-47311 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Samsung Escargot. Its CVSS base score is 7.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 20.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Heap-based buffer overflow vulnerability in Samsung Open Source Escargot allows Overflow Buffers. This issue affects Escargot: 590345cc6258317c5da850d846ce6baaf2afc2d3.

CWE(s)
CWE-122

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
Why these techniques?

Heap buffer overflow in JS engine directly enables client-side code execution via crafted input (T1203) and local privilege escalation (T1068).

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-47310Same product: Samsung Escargot
CVE-2026-8915Same product: Samsung Escargot
CVE-2026-47314Same product: Samsung Escargot
CVE-2025-20881Same vendor: Samsung
CVE-2025-52908Same vendor: Samsung
CVE-2025-20890Same vendor: Samsung
CVE-2025-49495Same vendor: Samsung
CVE-2026-20983Same vendor: Samsung
CVE-2026-20970Same vendor: Samsung
CVE-2026-20990Same vendor: Samsung

Affected Assets

samsung
escargot
2026-05-14

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References