Description
The installer of HYPER SBI 2 insecurely loads Dynamic Link Libraries. If there is a crafted DLL at the same directory when invoking the affected installer, arbitrary code may be executed with the privilege of the user invoking the installer.
Published: 2026-07-15
Score: 8.4 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The installer of HYPER SBI 2 loads dynamic link libraries from the current directory without verifying the source of those DLLs. If a malicious DLL is present in the same folder when the installer is executed, it will be loaded and its code will run with the privileges of the user performing the installation. This flaw allows local execution of attacker‑supplied code during the setup process.

Affected Systems

The vendor SBI SECURITIES Co.,Ltd. issues the HYPER SBI 2 installer. Any installation that uses the vulnerable installer is affected. The advisory does not disclose specific version ranges, so all builds that include the current installation routine are potentially impacted.

Risk and Exploitability

The CVSS score of 8.4 classifies this as high severity. The EPSS score of < 1 % indicates a low probability of exploitation, and the vulnerability is not listed in CISA’s KEV catalog. The attack requires the attacker to place a crafted DLL in the directory holding the installer and then have the user run the setup, thus the attack vector is local. The impact is limited to the privileges of the account that launches the installation.

Generated by OpenCVE AI on July 31, 2026 at 04:10 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Download and install the latest HYPER SBI 2 installer directly from SBI SECURITIES Co.,Ltd., avoiding untrusted sources.
  • Verify the installer’s digital signature or checksum before execution to confirm authenticity.
  • Execute the installer from a dedicated, clean directory that contains no unrelated DLLs, and remove the installation package afterward.
  • If an update is not yet available, enforce application whitelisting or DLL‑suppressing controls to block execution of unsigned modules during setup.

Generated by OpenCVE AI on July 31, 2026 at 04:10 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

References
Link Providers
https://jvn.jp/en/jp/JVN59875262/ cve-icon
History

Fri, 31 Jul 2026 04:30:00 +0000

Type Values Removed Values Added
Title DLL preloading vulnerability in HYPER SBI 2 installer

Mon, 27 Jul 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Sbi Securities
Sbi Securities hyper Sbi 2
Vendors & Products Sbi Securities
Sbi Securities hyper Sbi 2

Sat, 25 Jul 2026 08:15:00 +0000

Type Values Removed Values Added
Title DLL preloading vulnerability in HYPER SBI 2 installer

Fri, 17 Jul 2026 17:15:00 +0000

Type Values Removed Values Added
Title Installer Loads DLLs Unvalidated Leading to Arbitrary Code Execution

Thu, 16 Jul 2026 01:30:00 +0000

Type Values Removed Values Added
Title Installer Loads DLLs Unvalidated Leading to Arbitrary Code Execution

Wed, 15 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 15 Jul 2026 05:30:00 +0000

Type Values Removed Values Added
Description The installer of HYPER SBI 2 insecurely loads Dynamic Link Libraries. If there is a crafted DLL at the same directory when invoking the affected installer, arbitrary code may be executed with the privilege of the user invoking the installer.
Weaknesses CWE-427
References
Metrics cvssV3_0

{'score': 7.8, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.4, 'vector': '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'}

Subscriptions

Sbi Securities Hyper Sbi 2
cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2026-07-15T13:55:25.402Z

Reserved: 2026-07-10T01:12:30.231Z

Link: CVE-2026-42936

cve-icon Vulnrichment

Updated: 2026-07-15T13:55:11.025Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T04:15:04Z

Weaknesses
  • CWE-427

    Uncontrolled Search Path Element