CVE-2026-42936

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Published Jul 15, 2026 CVSS 4.0 · 8.4 High EPSS < 1% KEV · Not listed
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.

Analysis

AI-generated

Technical 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.

Remediation

No solution or workaround provided in the CVE record.

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 available
References
Link Providers
https://jvn.jp/en/jp/JVN59875262/ cve-icon cve-icon
History
Type Values Removed Values Added
Title DLL preloading vulnerability in HYPER SBI 2 installer
Type Values Removed Values Added
First Time appeared Sbi Securities
Sbi Securities hyper Sbi 2
Vendors & Products Sbi Securities
Sbi Securities hyper Sbi 2
Type Values Removed Values Added
Title DLL preloading vulnerability in HYPER SBI 2 installer
Type Values Removed Values Added
Title Installer Loads DLLs Unvalidated Leading to Arbitrary Code Execution
Type Values Removed Values Added
Title Installer Loads DLLs Unvalidated Leading to Arbitrary Code Execution
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}
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'}
Earlier changes (2)
Weaknesses
  • CWE-427

    Uncontrolled Search Path Element

Sources

Status
PUBLISHED
Assigner
jpcert
Published
Updated
Jul 15, 2026, 1:55 PM
Reserved
Jul 10, 2026, 1:12 AM

View source JSON

Updated
Jul 15, 2026, 1:55 PM

JSON

Status
Deferred
Published
Jul 15, 2026, 6:16 AM
Modified
Oct 24, 2026, 10:10 PM

View source JSON

No data.

Updated
Jul 31, 2026, 4:15 AM

JSON