CVE-2002-1521: Web Server 4D (WS4D) 3.6 stores passwords in plaintext in the Ws4d.4DD file, which allows attackers to gain pr

Routine

LOW 2.1DOWNGRADE

CVE-2002-1521 is a low-severity flaw (CVSS 2.1) affecting web server 4d. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Web Server 4D (WS4D) 3.6 stores passwords in plaintext in the Ws4d.4DD file, which allows attackers to gain privileges.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.3% (top 71%)
CISA exploited list	No
Published	2003-04-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mdg computer services

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2003-04-02 05:00 UTCPublished CVE record published
2026-06-16 21:59 UTCUpdated Record last modified

mdg computer services web server 4d DOWNGRADE

Affected: 3.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.6

1. Check installed version

apt-cache policy web-server-4d || rpm -q web-server-4d || web-server-4d --version

2. No fixed release: DOWNGRADE to a release before 3.6 (Debian / Ubuntu)

apt-cache madison web-server-4d sudo apt install web-server-4d=<VERSION_BEFORE_3.6> sudo apt-mark hold web-server-4d

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

dnf --showduplicates list web-server-4d sudo dnf downgrade web-server-4d-<VERSION_BEFORE_3.6> sudo dnf versionlock add web-server-4d

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-2002-1521?

web server 4d: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-1521 being exploited?

CVE-2002-1521 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-2002-1521 affect?

CVE-2002-1521 affects web server 4d. Severity is low (CVSS 2.1). Web Server 4D (WS4D) 3.6 stores passwords in plaintext in the Ws4d.4DD file, which allows attackers to gain privileges.

How urgent is CVE-2002-1521?

Priority 14/100. No elevated risk signals yet.

References

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