CVE-2004-1421: Multiple PHP remote file inclusion vulnerabilities (1) step_one.php, (2) step_one_tables.php, (3) step_two_tab

Q: How do I fix CVE-2004-1421?

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

Q: Is CVE-2004-1421 being exploited?

CVE-2004-1421 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2004-1421 affect?

CVE-2004-1421 affects whm autopilot. Severity is high (CVSS 7.5). Multiple PHP remote file inclusion vulnerabilities (1) step_one.php, (2) step_one_tables.php, (3) step_two_tables.php in WHM AutoPilot 2.4.6.5 and earlier allow remote attackers to execute arbitrary PHP code by modifying the server_inc para

Q: How urgent is CVE-2004-1421?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

This month

HIGH 7.5DOWNGRADE

CVE-2004-1421 is a high-severity flaw (CVSS 7.5) affecting whm autopilot. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple PHP remote file inclusion vulnerabilities (1) step_one.php, (2) step_one_tables.php, (3) step_two_tables.php in WHM AutoPilot 2.4.6.5 and earlier allow remote attackers to execute arbitrary PHP code by modifying the server_inc parameter to reference a URL on a remote web server that contains the code.

Why this priority

High severity
EPSS top 9%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: whm

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

whm whm autopilot DOWNGRADE

Affected: 2.4.5 · 2.4.6 · 2.4.6.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.4.5

1. Check installed version

apt-cache policy whm-autopilot || rpm -q whm-autopilot || whm-autopilot --version

2. No fixed release: DOWNGRADE to a release before 2.4.5 (Debian / Ubuntu)

apt-cache madison whm-autopilot sudo apt install whm-autopilot=<VERSION_BEFORE_2.4.5> sudo apt-mark hold whm-autopilot

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

dnf --showduplicates list whm-autopilot sudo dnf downgrade whm-autopilot-<VERSION_BEFORE_2.4.5> sudo dnf versionlock add whm-autopilot

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: WHM.AutoPilot < 2.4.6.5 - Multiple Vulnerabilities

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-2004-1421?

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

Is CVE-2004-1421 being exploited?

CVE-2004-1421 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-2004-1421 affect?

CVE-2004-1421 affects whm autopilot. Severity is high (CVSS 7.5). Multiple PHP remote file inclusion vulnerabilities (1) step_one.php, (2) step_one_tables.php, (3) step_two_tables.php in WHM AutoPilot 2.4.6.5 and earlier allow remote attackers to execute arbitrary PHP code by modifying the server_inc para

How urgent is CVE-2004-1421?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

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References

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