CVE-2018-5203: DEXTUploadX5 version Between 1.0.0.0 and 2.2.0.0 contains a vulnerability that could allow remote attacker to

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CRITICAL 9.8REMOTEUPGRADE

CVE-2018-5203 is a critical-severity flaw (CVSS 9.8) affecting dextuploadx5. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

DEXTUploadX5 version Between 1.0.0.0 and 2.2.0.0 contains a vulnerability that could allow remote attacker to download and execute remote arbitrary file by setting the arguments to the activex method. this can be leveraged for code execution.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.3% (top 16%)
CISA exploited list	No
Weakness	CWE-20
Published	2018-12-28
Last modified	2026-06-17

Publisher (CNA): KrCERT/CC · Vendor: dextsolution

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

Am I affected?

Timeline

2018-12-28 16:29 UTCPublished CVE record published
2026-06-17 01:59 UTCUpdated Record last modified

dextsolution dextuploadx5 UPGRADE

Affected: >= 1.0.0.0 and <= 2.2.0.0

Fixed in: newer than 2.2.0.0

Safe to downgrade to: a release before 1.0.0.0

1. Check installed version

apt-cache policy dextuploadx5 || rpm -q dextuploadx5 || dextuploadx5 --version

2. UPGRADE to newer than 2.2.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dextuploadx5

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dextuploadx5

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 1.0.0.0 (Debian / Ubuntu)

apt-cache madison dextuploadx5 sudo apt install dextuploadx5=<VERSION_BEFORE_1.0.0.0> sudo apt-mark hold dextuploadx5

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

dnf --showduplicates list dextuploadx5 sudo dnf downgrade dextuploadx5-<VERSION_BEFORE_1.0.0.0> sudo dnf versionlock add dextuploadx5

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-2018-5203?

dextuploadx5: upgrade to newer than 2.2.0.0. Exact commands for each OS are on this page.

Is CVE-2018-5203 being exploited?

CVE-2018-5203 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-2018-5203 affect?

CVE-2018-5203 affects dextuploadx5. Severity is critical (CVSS 9.8). DEXTUploadX5 version Between 1.0.0.0 and 2.2.0.0 contains a vulnerability that could allow remote attacker to download and execute remote arbitrary file by setting the arguments to the activex method. this can be leveraged for code executio

How urgent is CVE-2018-5203?

Priority 60/100. Critical severity; Remotely exploitable, no login, no user action

References

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