CVE-2020-25406: app\admin\controller\sys\Uploads.php in lemocms 1.8.x allows users to upload files to upload executable files.

This week

HIGH 7.3REMOTEUPGRADE

CVE-2020-25406 is a high-severity flaw (CVSS 7.3) affecting lemocms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

app\admin\controller\sys\Uploads.php in lemocms 1.8.x allows users to upload files to upload executable files.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-434
Published	2020-11-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: lemocms

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

Am I affected?

Timeline

2020-11-18 16:15 UTCPublished CVE record published
2026-06-17 03:06 UTCUpdated Record last modified

lemocms lemocms UPGRADE

Affected: >= 1.8.0 and <= 1.8.7

Fixed in: newer than 1.8.7

Safe to downgrade to: a release before 1.8.0

1. Check installed version

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

2. UPGRADE to newer than 1.8.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lemocms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lemocms

Note

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

3. If no update is available yet, DOWNGRADE to a release before 1.8.0 (Debian / Ubuntu)

apt-cache madison lemocms sudo apt install lemocms=<VERSION_BEFORE_1.8.0> sudo apt-mark hold lemocms

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list lemocms sudo dnf downgrade lemocms-<VERSION_BEFORE_1.8.0> sudo dnf versionlock add lemocms

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-2020-25406?

lemocms: upgrade to newer than 1.8.7. Exact commands for each OS are on this page.

Is CVE-2020-25406 being exploited?

CVE-2020-25406 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-2020-25406 affect?

CVE-2020-25406 affects lemocms. Severity is high (CVSS 7.3). app\admin\controller\sys\Uploads.php in lemocms 1.8.x allows users to upload files to upload executable files.

How urgent is CVE-2020-25406?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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