CVE-2026-4869CWE-426

CVE-2026-4869

published October 13, 2026

CVSS
5.4
EPSS
0%
Percentile
1.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
5.4 · NONE
CVSS v4.0
5.4 · 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
EPSS
0.00112 · 1.3th percentile
Weakness
CWE-426 · Untrusted Search Path
Published
2026-10-13T19:17Z
References (1)
https://community.revenera.com/s/article/CVE-2026-4869-Potential-Privilege-Escalation-in-InstallShield-2025-R2-running-Setup-Prerequisites-from-an-insecure-directory · [email protected]
EPSS history
Timeline
  • 15 OCT 03:32Z
    EPSS moved — → 0%
    epss
  • 13 OCT 14:10Z
    Potential Privilege Escalation in InstallShield
    cvelistv5
  • 13 OCT 14:10Z
    Potential Privilege Escalation in InstallShield
    cvelistv5