CVE WatchOct 16, 2026

CVE-2026-4869

A potential privilege escalation issue was identified in InstallShield version 2025 R2 and earlier when running compressed Basic MSI setup w

CVSS

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No CVSS

EPSS

0.1%

KEV

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Exploit Today

0-100

Published: Oct 13, 2026 · Last modified: Oct 16, 2026 · CWE-426

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-10-142026-10-22

Technical 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.

Official references

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

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