CVE-2026-4869

Potential Privilege Escalation in InstallShield

Published Oct 13, 2026 CVSS 4.0 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
A potential privilege escalation issue was identified in InstallShield version 2025 R2 and earlier when running compressed Basic MSI setup with Prerequisites from an insecure location. If a local administrator launches a compressed Setup.exe with Prerequisites from an unsecured location, the Prerequisite installers also might load from an unsecured location, potentially leading to privilege escalation.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Flexera
Flexera installshield
Vendors & Products Flexera
Flexera installshield
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 A potential privilege escalation issue was identified in InstallShield version 2025 R2 and earlier when running compressed Basic MSI setup with Prerequisites from an insecure location. If a local administrator launches a compressed Setup.exe with Prerequisites from an unsecured location, the Prerequisite installers also might load from an unsecured location, potentially leading to privilege escalation.
Title Potential Privilege Escalation in InstallShield
Weaknesses CWE-426
References
Metrics cvssV4_0

{'score': 5.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
flexera
Published
Updated
Oct 13, 2026, 3:49 PM
Reserved
Mar 25, 2026, 8:37 PM
Status
Awaiting Analysis
Published
Oct 13, 2026, 3:17 PM
Modified
Oct 16, 2026, 4:00 PM