CVE-2025-15595 Privilege escalation via dll hijacking in Inno Setup
Medium 5.7
Published
Updated
Check this codebase for CVE-2025-15595 and fix it if it is affected.
What it is: CVE-2025-15595 is a medium-severity vulnerability in mlsoft Inno Setup, published on 3 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-15595 in the wild and no public exploit code.
Affected product: mlsoft Inno Setup. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2025-15595/ (Markdown: https://insights.sbomify.com/CVE-2025-15595/index.md)
Attackers can escalate privileges via DLL hijacking in Inno Setup, requiring an upgrade to secure the installation process.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-15595?
CVE-2025-15595 is a medium-severity vulnerability in mlsoft Inno Setup, published on 3 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Privilege escalation via dll hijacking in Inno Setup 6.2.1 and ealier versions.
Weakness: CWE-1390
Which versions are affected by CVE-2025-15595?
It affects 1 product.
Products include Jrsoftware Inno Setup.
How do I fix CVE-2025-15595?
No fix has been published for CVE-2025-15595 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-15595 being exploited?
There is no known exploitation of CVE-2025-15595 in the wild and no public exploit code.
Sources
Also known as GHSA-4rhw-3jx2-mpcf.