VDB-348532 · CVE-2025-15595 · GCVE-0-2025-15595

mlsoft Inno Setup up to 6.2.1 weak authentication

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in mlsoft Inno Setup up to 6.2.1. This affects an unknown function. Executing a manipulation can lead to weak authentication. This vulnerability is tracked as CVE-2025-15595. The attack is restricted to local execution. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in mlsoft Inno Setup up to 6.2.1. It has been declared as critical. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a weak authentication vulnerability. The CWE definition for the vulnerability is CWE-1390. The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Privilege escalation via dll hijacking in Inno Setup 6.2.1 and ealier versions.

The advisory is shared for download at jrsoftware.org. This vulnerability was named CVE-2025-15595 since 02/27/2026. The exploitation appears to be difficult. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available.

Upgrading to version 6.2.2 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

mlsoft

Name

Inno Setup

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Weak authentication
CWE: CWE-1390
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Inno Setup 6.2.2

Timelineinfo

02/27/2026 CVE reserved
03/03/2026 +4 days Advisory disclosed
03/03/2026 +0 days VulDB entry created
03/14/2026 +11 days VulDB entry last update

Sourcesinfo

Advisory: jrsoftware.org
Status: Confirmed

CVE: CVE-2025-15595 (🔒)
GCVE (CVE): GCVE-0-2025-15595
GCVE (VulDB): GCVE-100-348532

Entryinfo

Created: 03/03/2026 08:00
Updated: 03/14/2026 01:13
Changes: 03/03/2026 08:00 (68), 03/04/2026 16:59 (1), 03/14/2026 01:13 (12)
Complete: 🔍
Cache ID: 216:81D:103