CVE-2026-42936

Code execution via installer DLL search path

Published Jul 15, 2026 · Updated Jul 15, 2026

DLL search-order hijacking in the HYPER SBI 2 installer before 3.20.0 allows local users to execute code through a crafted DLL. When launched from a directory containing the crafted library, the installer searches that directory and loads the DLL without restricting its search path. A user must invoke the installer from that directory; the payload then runs with that user's privileges and can access resources available to the installer.

CVSS severity8.4
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DLL search-order hijacking in the HYPER SBI 2 installer before 3.20.0 allows local users to execute code through a crafted DLL. When launched from a directory containing the crafted library, the installer searches that directory and loads the DLL without restricting its search path. A user must invoke the installer from that directory; the payload then runs with that user's privileges and can access resources available to the installer.

The record

CVE
CVE-2026-42936
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
SBI SECURITIES Co., Ltd.
Product
HYPER SBI 2
Classifications
CWE-427, CAPEC-38, CAPEC-471, T1574.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <ver.3.20.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

SBI SECURITIES Co., Ltd. · HYPER SBI 2version=0 <ver.3.20.0

Published CVSS scores

8.4JPCERT/CCCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8JPCERT/CCCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
CAPEC-38Leveraging/Manipulating Configuration File Search Paths
CAPEC-471Search Order Hijacking
T1574.001Hijack Execution Flow: DLL

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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