CVE-2026-4869 — Potential Privilege Escalation in InstallShield

CVE-2026-4869

Potential Privilege Escalation in InstallShield PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Flexera / InstallShield	affected 0 through 2025 R2

CWE

CWE-426

References

https://community.revenera.com/s/article/CVE-2026-4869-Potential-Privilege-Escalation-in-InstallShield-2025-R2-running-Setup-Prerequisites-from-an-insecure-directory

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.