CVE-2001-0899: Network Tools 0.2 for PHP-Nuke allows remote attackers to execute commands on the server via shell metacharact

This week

HIGH 7.5MITIGATEDOWNGRADE

CVE-2001-0899 is a high-severity flaw (CVSS 7.5) affecting php-nuke, network tools. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Network Tools 0.2 for PHP-Nuke allows remote attackers to execute commands on the server via shell metacharacters in the $hostinput variable.

Why this priority

High severity
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	7.5 (High)
EPSS exploit chance	8.9% (top 5%)
CISA exploited list	No
Published	2001-11-16
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: phpnuke · rick fournier

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

Am I affected?

Timeline

2001-11-16 05:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

phpnuke php-nuke MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy php-nuke || rpm -q php-nuke || php-nuke --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

rick fournier network tools DOWNGRADE

Affected: 0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2

1. Check installed version

apt-cache policy network-tools || rpm -q network-tools || network-tools --version

2. No fixed release: DOWNGRADE to a release before 0.2 (Debian / Ubuntu)

apt-cache madison network-tools sudo apt install network-tools=<VERSION_BEFORE_0.2> sudo apt-mark hold network-tools

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

dnf --showduplicates list network-tools sudo dnf downgrade network-tools-<VERSION_BEFORE_0.2> sudo dnf versionlock add network-tools

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: PHP-Nuke Network Tool 0.2 Addon - MetaCharacter Filtering Command Execution

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-2001-0899?

php-nuke: mitigate or apply the listed mitigation; network tools: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2001-0899 being exploited?

CVE-2001-0899 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-2001-0899 affect?

CVE-2001-0899 affects php-nuke, network tools. Severity is high (CVSS 7.5). Network Tools 0.2 for PHP-Nuke allows remote attackers to execute commands on the server via shell metacharacters in the $hostinput variable.

How urgent is CVE-2001-0899?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Software pages

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References

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