CVE-2004-1557: MyWebServer 1.0.3 allows remote attackers to bypass authentication, modify configuration, and read arbitrary f

This month

MEDIUM 6.4DOWNGRADE

CVE-2004-1557 is a medium-severity flaw (CVSS 6.4) affecting mywebserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MyWebServer 1.0.3 allows remote attackers to bypass authentication, modify configuration, and read arbitrary files via a direct HTTP request to (1) /admin or (2) ServerProperties.html.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mywebserver

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 22:07 UTCUpdated Record last modified

mywebserver mywebserver DOWNGRADE

Affected: 1.0.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.3 (Debian / Ubuntu)

apt-cache madison mywebserver sudo apt install mywebserver=<VERSION_BEFORE_1.0.3> sudo apt-mark hold mywebserver

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

dnf --showduplicates list mywebserver sudo dnf downgrade mywebserver-<VERSION_BEFORE_1.0.3> sudo dnf versionlock add mywebserver

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-2004-1557?

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

Is CVE-2004-1557 being exploited?

CVE-2004-1557 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-2004-1557 affect?

CVE-2004-1557 affects mywebserver. Severity is medium (CVSS 6.4). MyWebServer 1.0.3 allows remote attackers to bypass authentication, modify configuration, and read arbitrary files via a direct HTTP request to (1) /admin or (2) ServerProperties.html.

How urgent is CVE-2004-1557?

Priority 41/100. No elevated risk signals yet.

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CVE-2002-1454 MEDIUM 5.0 DOWNGRADE MyWebServer 1.0.2 allows remote attackers to determine the absolute path of the web document root via a reques
CVE-2002-1453 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in MyWebServer 1.0.2 allows remote attackers to insert script and HTM
CVE-2002-1452 HIGH 7.5 DOWNGRADE Buffer overflow in the search capability for MyWebServer 1.0.2 allows remote attackers to execute arbitrary co

References

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