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CVE-2001-0437: upload_file.pl in DCForum 2000 1.0 allows remote attackers to upload arbitrary files without authentication by

37
Routine
MEDIUM 5.0DOWNGRADEDOWNGRADE

CVE-2001-0437 is a medium-severity flaw (CVSS 5.0) affecting dcforum, dcforum 2000. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

upload_file.pl in DCForum 2000 1.0 allows remote attackers to upload arbitrary files without authentication by setting the az parameter to upload_file.

Why this priority

  • No elevated risk signals yet

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

Risk facts

CVSS score5.0 (Medium)
EPSS exploit chance1.7% (top 23%)
CISA exploited listNo
Published2001-07-02
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: dcscripts

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

Am I affected?

Timeline

dcscripts dcforum DOWNGRADE
Affected: 1.0 · 2.0 · 3.0 · 4.0 · 5.0 · 6.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.0
1. Check installed version
apt-cache policy dcforum || rpm -q dcforum || dcforum --version
2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)
apt-cache madison dcforum sudo apt install dcforum=<VERSION_BEFORE_1.0> sudo apt-mark hold dcforum
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list dcforum sudo dnf downgrade dcforum-<VERSION_BEFORE_1.0> sudo dnf versionlock add dcforum
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.
dcscripts dcforum 2000 DOWNGRADE
Affected: 1.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.0
1. Check installed version
apt-cache policy dcforum-2000 || rpm -q dcforum-2000 || dcforum-2000 --version
2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)
apt-cache madison dcforum-2000 sudo apt install dcforum-2000=<VERSION_BEFORE_1.0> sudo apt-mark hold dcforum-2000
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list dcforum-2000 sudo dnf downgrade dcforum-2000-<VERSION_BEFORE_1.0> sudo dnf versionlock add dcforum-2000
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-2001-0437?

dcforum: downgrade or apply the listed mitigation; dcforum 2000: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2001-0437 being exploited?

CVE-2001-0437 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-2001-0437 affect?

CVE-2001-0437 affects dcforum, dcforum 2000. Severity is medium (CVSS 5.0). upload_file.pl in DCForum 2000 1.0 allows remote attackers to upload arbitrary files without authentication by setting the az parameter to upload_file.

How urgent is CVE-2001-0437?

Priority 37/100. No elevated risk signals yet.

Related CVEs

References

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