CVE-2000-0521: Savant web server allows remote attackers to read source code of CGI scripts via a GET request that does not i

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MEDIUM 5.0DOWNGRADE

CVE-2000-0521 is a medium-severity flaw (CVSS 5.0) affecting savant webserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Savant web server allows remote attackers to read source code of CGI scripts via a GET request that does not include the HTTP version number.

Why this priority

EPSS top 5%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	7.7% (top 5%)
CISA exploited list	No
Published	2000-06-05
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: michael lamont

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

Am I affected?

Timeline

2000-06-05 04:00 UTCPublished CVE record published
2026-06-16 21:51 UTCUpdated Record last modified

michael lamont savant webserver DOWNGRADE

Affected: 2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1

1. Check installed version

apt-cache policy savant-webserver || rpm -q savant-webserver || savant-webserver --version

2. No fixed release: DOWNGRADE to a release before 2.1 (Debian / Ubuntu)

apt-cache madison savant-webserver sudo apt install savant-webserver=<VERSION_BEFORE_2.1> sudo apt-mark hold savant-webserver

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

dnf --showduplicates list savant-webserver sudo dnf downgrade savant-webserver-<VERSION_BEFORE_2.1> sudo dnf versionlock add savant-webserver

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Michael Lamont Savant Web Server 2.1 - CGI Source Code Disclosure

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-2000-0521?

savant webserver: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2000-0521 being exploited?

CVE-2000-0521 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-2000-0521 affect?

CVE-2000-0521 affects savant webserver. Severity is medium (CVSS 5.0). Savant web server allows remote attackers to read source code of CGI scripts via a GET request that does not include the HTTP version number.

How urgent is CVE-2000-0521?

Priority 46/100. EPSS top 5%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2005-2859 MEDIUM 4.6 DOWNGRADE Savant Web Server stores user credentials in plaintext in the Savant\Users registry key, which allows local us
CVE-2005-0338 HIGH 7.5 DOWNGRADE Buffer overflow in Savant Web Server 3.1 allows remote attackers to execute arbitrary code via a long HTTP req
CVE-2002-2146 HIGH 7.5 DOWNGRADE cgitest.exe in Savant Web Server 3.1 and earlier allows remote attackers to cause a denial of service (crash)
CVE-2002-2145 HIGH 7.5 UPGRADE Savant Web Server 3.1 and earlier allows remote attackers to bypass authentication for password protected user
CVE-2002-1828 MEDIUM 5.0 DOWNGRADE Savant Webserver 3.1 allows remote attackers to cause a denial of service (crash) via an HTTP GET request with

References

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