Cyber Posture

CVE-2026-8915

High
Microsoft: not affectedMSmacOS: not affectedMacLinux: not affectedLnxMobile: not affectedMobNetwork: not affectedNetApplication: not affectedAppOther: affectedOth

Published: 28 May 2026

Published
28 May 2026
Modified
28 May 2026
KEV Added
—
Patch
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CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0002 4.0th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-8915 is a high-severity Out-of-bounds Write (CWE-787) vulnerability. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 4.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploitation for Client Execution (T1203) and 1 other technique.
Threat & Defense Details

Likely Mitigating ControlsAI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

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?

Out-of-bounds write (CWE-787) in JS engine enables client-side code execution via crafted JS and potential privilege escalation.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

NVD Description

Out-of-bounds write vulnerability in Samsung Open Source Escargot allows Overflow Buffers. This issue affects Escargot: 36f5fb58366a67b713c02f6fd985e924fcc09e31.

Deeper analysisAI

Automated synthesis unavailable for this CVE.

Details

CWE(s)
CWE-787

EU & UK References

References