CVE-2026-5397

Status: Awaiting AnalysisHigh (7.8)—

It has been identified that a vulnerability (CWE-427) exists in the UPS (Uninterruptible Power Supply) management application, whereby improper permissions on the installation directory allow a malicious actor to place a DLL that is then executed with administrator privileges.

If a malicious DLL is placed in the installation directory of this product, there is a possibility that the malicious DLL may be executed by exploiting the product’s behavior of loading missing DLLs from the same directory as the executable during service startup.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Base score: 7.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.14%
Percentile among all scored CVEs: 3
Score date: 10/2/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1068 Exploitation for Privilege Escalationprivilege escalation95 %
Primary impactT1574.007 Path Interception by PATH Environment Variablestealth · execution90 %
Secondary impactT1059 Command and Scripting Interpreterexecution85 %

AV:L, PR:L sin UI permite escalada local. CWE-427 + DLL en directorio = DLL Hijacking (T1574.007). Ejecución con privilegios de administrador tras startup del servicio (T1059).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Execution Prevention Audit Threat Intelligence Program Restrict Web-Based Content Restrict File and Directory Permissions Privileged Account Management

CWEs

CWE-427

References

Raw JSON (NVD)

Show

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          "options": [
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        {
          "vendor": "OMRON SOCIAL SOLUTIONS CO., Ltd.",
          "product": "PowerAttendant Standard Edition",
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  "published": "2026-04-15T05:16:45.740",
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  "lastModified": "2026-06-17T10:58:57.633",
  "sourceIdentifier": "bba440f9-ef23-4224-aa62-7ac0935d18d1"
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