CVE-2025-5171: A vulnerability, which was classified as critical, has been found in llisoft MTA Maita Training System 4.5

Routine

MEDIUM 6.3DOWNGRADE

CVE-2025-5171 is a medium-severity flaw (CVSS 6.3) affecting mta maita training system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as critical, has been found in llisoft MTA Maita Training System 4.5. This issue affects the function this.fileService.download of the file com\llisoft\controller\OpenController.java. The manipulation of the argument url leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-284, CWE-434
Published	2025-05-26
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: llisoft

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

Am I affected?

Timeline

2025-05-26 06:17 UTCPublished CVE record published
2026-06-17 09:47 UTCUpdated Record last modified

llisoft mta maita training system DOWNGRADE

Affected: 4.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.5

1. Check installed version

apt-cache policy mta-maita-training-system || rpm -q mta-maita-training-system || mta-maita-training-system --version

2. No fixed release: DOWNGRADE to a release before 4.5 (Debian / Ubuntu)

apt-cache madison mta-maita-training-system sudo apt install mta-maita-training-system=<VERSION_BEFORE_4.5> sudo apt-mark hold mta-maita-training-system

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

dnf --showduplicates list mta-maita-training-system sudo dnf downgrade mta-maita-training-system-<VERSION_BEFORE_4.5> sudo dnf versionlock add mta-maita-training-system

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.

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-2025-5171?

mta maita training system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-5171 being exploited?

CVE-2025-5171 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-2025-5171 affect?

CVE-2025-5171 affects mta maita training system. Severity is medium (CVSS 6.3). A vulnerability, which was classified as critical, has been found in llisoft MTA Maita Training System 4.5. This issue affects the function this.fileService.download of the file com\llisoft\controller\OpenController.java. The manipulation o

How urgent is CVE-2025-5171?

Priority 38/100. Public exploit reference

Software pages

Java vulnerabilities

Related CVEs

CVE-2025-5170 MEDIUM 6.3 DOWNGRADE A vulnerability classified as critical was found in llisoft MTA Maita Training System 4.5

References

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