CVE-2026-8637

Elevated code execution via uncontrolled search path

Published Jun 10, 2026 · Updated Jun 10, 2026

Uncontrolled search path handling in Lenovo LanSchool Classic before 9.3.1.30 allows local users to execute code with elevated privileges. The client application resolves a dependency through an uncontrolled search path, but Lenovo has not identified the affected file or routine. Exploitation requires an authenticated local account and yields execution in the elevated context of the affected client component.

CVSS severity8.5
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled search path handling in Lenovo LanSchool Classic before 9.3.1.30 allows local users to execute code with elevated privileges. The client application resolves a dependency through an uncontrolled search path, but Lenovo has not identified the affected file or routine. Exploitation requires an authenticated local account and yields execution in the elevated context of the affected client component.

The record

CVE
CVE-2026-8637
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
Lenovo
Product
LanSchool Classic
Classifications
CWE-427, T1574
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 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 <9.3.1.30

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Lenovo · LanSchool Classicversion=0 <9.3.1.30

Published CVSS scores

8.5Lenovo Group Ltd.CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8Lenovo Group Ltd.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1574Hijack Execution Flow

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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