CVE-2018-25359Public exploit

LocalSystem escalation via writable service executable

Published May 25, 2026 · Updated May 25, 2026

Insecure file permissions in Splinterware System Scheduler Professional 5.12 allow local users to execute code with LocalSystem privileges. The installation directory grants Everyone modify access, allowing WService.exe to be renamed and replaced before the WindowsScheduler service launches it. The Professional service must be installed; its periodic service check triggers the replacement without requiring the local user to restart the service.

CVSS severity8.6
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Insecure file permissions in Splinterware System Scheduler Professional 5.12 allow local users to execute code with LocalSystem privileges. The installation directory grants Everyone modify access, allowing WService.exe to be renamed and replaced before the WindowsScheduler service launches it. The Professional service must be installed; its periodic service check triggers the replacement without requiring the local user to restart the service.

The record

CVE
CVE-2018-25359
Published
May 25, 2026
Updated
May 25, 2026
Vendor
Splinterware
Product
System Scheduler Professional
Classifications
CWE-276, T1574.010
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 25, 2026CVE publishedPublication date reported by the CVE source.
  2. May 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Splinterware · System Scheduler Professionalversion=5.12

Published CVSS scores

8.4VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.6VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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 exploitPublished

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1574.010Hijack Execution Flow: Services File Permissions Weakness

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo