CVE-2021-3394: Millennium Millewin (also known as "Cartella clinica") 13.39.028, 13.39.28.3342, and 13.39.146.1 has insecure

This month

HIGH 8.8DOWNGRADE

CVE-2021-3394 is a high-severity flaw (CVSS 8.8) affecting millewin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Millennium Millewin (also known as "Cartella clinica") 13.39.028, 13.39.28.3342, and 13.39.146.1 has insecure folder permissions allowing a malicious user for a local privilege escalation.

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	5.8% (top 7%)
CISA exploited list	No
Weakness	CWE-276
Published	2021-02-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: millewin

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

Am I affected?

Timeline

2021-02-09 15:15 UTCPublished CVE record published
2026-06-17 04:05 UTCUpdated Record last modified

millewin millewin DOWNGRADE

Affected: 13.39.028 · 13.39.28.3342 · 13.39.146.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.39.028

1. Check installed version

apt-cache policy millewin || rpm -q millewin || millewin --version

2. No fixed release: DOWNGRADE to a release before 13.39.028 (Debian / Ubuntu)

apt-cache madison millewin sudo apt install millewin=<VERSION_BEFORE_13.39.028> sudo apt-mark hold millewin

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list millewin sudo dnf downgrade millewin-<VERSION_BEFORE_13.39.028> sudo dnf versionlock add millewin

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Millewin 13.39.146.1 - Local Privilege Escalation

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-2021-3394?

millewin: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-3394 being exploited?

CVE-2021-3394 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-2021-3394 affect?

CVE-2021-3394 affects millewin. Severity is high (CVSS 8.8). Millennium Millewin (also known as "Cartella clinica") 13.39.028, 13.39.28.3342, and 13.39.146.1 has insecure folder permissions allowing a malicious user for a local privilege escalation.

How urgent is CVE-2021-3394?

Priority 59/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

References

← Back to latest CVEs