CVE-2025-15595

Local privilege escalation via DLL preloading

Published Mar 3, 2026 · Updated Mar 3, 2026

DLL hijacking in Inno Setup 6.2.1 and earlier allows local users to escalate privileges through installer or uninstaller execution. The vendor describes the defect only as a DLL-preloading weakness and has not published the affected DLL-loading call or unsafe search path. Exploitation requires local low-privileged access and specific loading conditions, and successful code execution inherits the installer or uninstaller's elevated security context.

CVSS severity7.8
High
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

DLL hijacking in Inno Setup 6.2.1 and earlier allows local users to escalate privileges through installer or uninstaller execution. The vendor describes the defect only as a DLL-preloading weakness and has not published the affected DLL-loading call or unsafe search path. Exploitation requires local low-privileged access and specific loading conditions, and successful code execution inherits the installer or uninstaller's elevated security context.

The record

CVE
CVE-2025-15595
Published
Mar 3, 2026
Updated
Mar 3, 2026
Vendor
Inno Setup
Product
Inno Setup
Classifications
CWE-1390, CAPEC-233, T1574.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=6.2.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Inno Setup · Inno Setupversion=0 <=6.2.1

Published CVSS scores

5.7National Cyber Security Centre FinlandCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H/E:U
7.8NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1390Weak Authentication
CAPEC-233Privilege Escalation
T1574.001DLL Search Order Hijacking

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo