Cyber Resilience

CVE-2026-28704

HighUpdated

Published: 10 April 2026

Published
10 April 2026
Modified
08 June 2026
KEV Added
—
Patch
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CVSS Score v4 8.4 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0016 5.5th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-28704 is a high-severity Uncontrolled Search Path Element (CWE-427) vulnerability in Jpcert Emocheck. Its CVSS base score is 8.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique DLL (T1574.001); ranked at the 5.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A08:2025 Software or Data Integrity Failures

EU & UK References

Vulnerability details

Emocheck insecurely loads Dynamic Link Libraries (DLLs). If a crafted DLL file is placed to the same directory, an arbitrary code may be executed with the privilege of the user invoking EmoCheck.

CWE(s)
CWE-427

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1574.001 DLL Stealth
Adversaries may abuse dynamic-link library files (DLLs) in order to achieve persistence, escalate privileges, and evade defenses.
attack.mitre.org →
Why these techniques?

CWE-427 insecure DLL loading from the application directory directly enables DLL side-loading (T1574.002) for arbitrary code execution.

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

Affected Assets

jpcert
emocheck
all versions

Mitigating Controls

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

References