CVE-2004-2661: Soft3304 04WebServer before 1.41 does not properly check file names, which allows remote attackers to obtain s

Routine

MEDIUM 5.0DOWNGRADE

CVE-2004-2661 is a medium-severity flaw (CVSS 5.0) affecting 04webserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Soft3304 04WebServer before 1.41 does not properly check file names, which allows remote attackers to obtain sensitive information (CGI source code).

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: soft3304

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:10 UTCUpdated Record last modified

soft3304 04webserver DOWNGRADE

Affected: 1.40

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.40

1. Check installed version

apt-cache policy 04webserver || rpm -q 04webserver || 04webserver --version

2. No fixed release: DOWNGRADE to a release before 1.40 (Debian / Ubuntu)

apt-cache madison 04webserver sudo apt install 04webserver=<VERSION_BEFORE_1.40> sudo apt-mark hold 04webserver

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

dnf --showduplicates list 04webserver sudo dnf downgrade 04webserver-<VERSION_BEFORE_1.40> sudo dnf versionlock add 04webserver

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-2004-2661?

04webserver: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-2661 being exploited?

CVE-2004-2661 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-2004-2661 affect?

CVE-2004-2661 affects 04webserver. Severity is medium (CVSS 5.0). Soft3304 04WebServer before 1.41 does not properly check file names, which allows remote attackers to obtain sensitive information (CGI source code).

How urgent is CVE-2004-2661?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2006-4200 HIGH 7.5 UPGRADE Unspecified vulnerability in 04WebServer 1.83 and earlier allows remote attackers to bypass user authenticatio
CVE-2006-4199 MEDIUM 6.8 UPGRADE Cross-site scripting (XSS) vulnerability in Soft3304 04WebServer 1.83 and earlier allows remote attackers to i
CVE-2005-1416 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in 04WebServer 1.81 allows remote attackers to read files outside of the web
CVE-2004-2662 MEDIUM 5.0 DOWNGRADE Soft3304 04WebServer before 1.41 allows remote attackers to cause a denial of service (resource consumption or
CVE-2004-1514 MEDIUM 5.0 DOWNGRADE 04WebServer 1.42 allows remote attackers to cause a denial of service (fail to restart properly) via an HTTP r

References

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