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.

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Fixes

Solution

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Workaround

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History

Tue, 13 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Flexera
Flexera installshield
Vendors & Products Flexera
Flexera installshield

Tue, 13 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 14:30:00 +0000

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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: flexera

Published:

Updated: 2026-10-13T15:49:47.206Z

Reserved: 2026-03-25T20:37:08.484Z

Link: CVE-2026-4869

cve-icon Vulnrichment

Updated: 2026-10-13T15:40:54.063Z

cve-icon NVD

Status : Received

Published: 2026-10-13T15:17:44.480

Modified: 2026-10-13T16:17:20.863

Link: CVE-2026-4869

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T18:30:07Z

Weaknesses