CVE-2004-0264: palmhttpd for PalmOS allows remote attackers to cause a denial of service (crash) by establishing two simultan

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MEDIUM 5.0DOWNGRADEDOWNGRADE

CVE-2004-0264 is a medium-severity flaw (CVSS 5.0) affecting jim rees httpd, palmhttpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

palmhttpd for PalmOS allows remote attackers to cause a denial of service (crash) by establishing two simultaneous HTTP connections, which exceeds the PalmOS accept queue.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Published	2004-11-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: jim rees · shaun2k2

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

Am I affected?

Timeline

2004-11-23 05:00 UTCPublished CVE record published
2026-06-16 22:05 UTCUpdated Record last modified

jim rees jim rees httpd DOWNGRADE

Affected: palmos

Fixed in: no fixed release known

Safe to downgrade to: a release before palmos

1. Check installed version

apt-cache policy jim-rees-httpd || rpm -q jim-rees-httpd || jim-rees-httpd --version

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

apt-cache madison jim-rees-httpd sudo apt install jim-rees-httpd=<VERSION_BEFORE_palmos> sudo apt-mark hold jim-rees-httpd

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

dnf --showduplicates list jim-rees-httpd sudo dnf downgrade jim-rees-httpd-<VERSION_BEFORE_palmos> sudo dnf versionlock add jim-rees-httpd

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.

shaun2k2 palmhttpd DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison palmhttpd sudo apt install palmhttpd=<VERSION_BEFORE_3.0> sudo apt-mark hold palmhttpd

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

dnf --showduplicates list palmhttpd sudo dnf downgrade palmhttpd-<VERSION_BEFORE_3.0> sudo dnf versionlock add palmhttpd

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: Shaun2k2 Palmhttpd Server 3.0 - Remote Denial of Service

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-2004-0264?

jim rees httpd: downgrade or apply the listed mitigation; palmhttpd: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-0264 being exploited?

CVE-2004-0264 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-2004-0264 affect?

CVE-2004-0264 affects jim rees httpd, palmhttpd. Severity is medium (CVSS 5.0). palmhttpd for PalmOS allows remote attackers to cause a denial of service (crash) by establishing two simultaneous HTTP connections, which exceeds the PalmOS accept queue.

How urgent is CVE-2004-0264?

Priority 45/100. Public exploit reference

Software pages

Apache HTTP Server vulnerabilities

References

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