Is there a public PoC exploit available for EUVD-2018-21881?

Yes, a public proof-of-concept exploit is available for EUVD-2018-21881. Prioritise patching immediately. EPSS: 0.0%.

Splinterware System Scheduler Pro EUVD-2018-21881

Q: What is the CVSS score of EUVD-2018-21881?

EUVD-2018-21881 has a CVSS 4.0 base score of 8.6 (High). CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

| CVE-2018-25359 HIGH

Incorrect Default Permissions (CWE-276)

2026-05-25 VulnCheck

GHSA-crfv-m32j-v6c2

Privilege Escalation Splinterware System Scheduler Pro

8.6

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

8.6 HIGH

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

CVSS changed

May 26, 2026 - 19:52 NVD

8.4 (HIGH) 8.6 (HIGH)

CVE Published

May 25, 2026 - 14:15 cve.org

HIGH 8.6

DescriptionCVE.org

Splinterware System Scheduler Pro 5.12 contains an insecure file permissions vulnerability that allows low-privilege users to escalate privileges by modifying service executable files. Attackers can rename the WService.exe file in the installation directory and replace it with a malicious executable that executes with LocalSystem privileges when the service is triggered.

AnalysisAI

Splinterware System Scheduler Pro 5.12 contains an insecure file permissions vulnerability that allows low-privilege users to escalate privileges by modifying service executable files. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Incorrect Default Permissions (CWE-276), which allows attackers to access resources due to overly permissive default settings. Splinterware System Scheduler Pro 5.12 contains an insecure file permissions vulnerability that allows low-privilege users to escalate privileges by modifying service executable files. Attackers can rename the WService.exe file in the installation directory and replace it with a malicious executable that executes with LocalSystem privileges when the service is triggered. Affected products include: Splinterware Splinterware System Scheduler Pro.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Set restrictive default permissions, follow principle of least privilege, review defaults during deployment.