CVE-2025-15595: Privilege escalation via dll hijacking in Inno Setup 6.2.1 and ealier versions.

Q: How do I fix CVE-2025-15595?

inno setup: upgrade to newer than 6.2.1. Exact commands for each OS are on this page.

Q: Is CVE-2025-15595 being exploited?

CVE-2025-15595 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-15595 affect?

CVE-2025-15595 affects inno setup. Severity is high (CVSS 7.8). Privilege escalation via dll hijacking in Inno Setup 6.2.1 and ealier versions.

Routine

HIGH 7.8UPGRADE

CVE-2025-15595 is a high-severity flaw (CVSS 7.8) affecting inno setup. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-1390
Published	2026-03-03
Last modified	2026-06-17

Publisher (CNA): National Cyber Security Centre Finland · Vendor: jrsoftware

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-03 07:16 UTCPublished CVE record published
2026-06-17 08:38 UTCUpdated Record last modified

jrsoftware inno setup UPGRADE

Affected: <= 6.2.1

Fixed in: newer than 6.2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy inno-setup || rpm -q inno-setup || inno-setup --version

2. UPGRADE to newer than 6.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade inno-setup

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade inno-setup

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-15595?

inno setup: upgrade to newer than 6.2.1. Exact commands for each OS are on this page.

Is CVE-2025-15595 being exploited?

CVE-2025-15595 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-15595 affect?

CVE-2025-15595 affects inno setup. Severity is high (CVSS 7.8). Privilege escalation via dll hijacking in Inno Setup 6.2.1 and ealier versions.

How urgent is CVE-2025-15595?

Priority 27/100. High severity

References

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