CVE-2002-0613: dnstools.php for DNSTools 2.0 beta 4 and earlier allows remote attackers to bypass authentication and gain pri

This week

HIGH 10.0DOWNGRADE

CVE-2002-0613 is a high-severity flaw (CVSS 10.0) affecting dnstools. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

dnstools.php for DNSTools 2.0 beta 4 and earlier allows remote attackers to bypass authentication and gain privileges by setting the user_logged_in or user_dnstools_administrator parameters.

Why this priority

Critical severity
EPSS top 4%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	11.3% (top 4%)
CISA exploited list	No
Published	2002-06-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: dnstools software

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

Am I affected?

Timeline

2002-06-18 04:00 UTCPublished CVE record published
2026-06-16 21:57 UTCUpdated Record last modified

dnstools software dnstools DOWNGRADE

Affected: 2.0_beta3 · 2.0_beta4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0_beta3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0_beta3 (Debian / Ubuntu)

apt-cache madison dnstools sudo apt install dnstools=<VERSION_BEFORE_2.0_beta3> sudo apt-mark hold dnstools

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

dnf --showduplicates list dnstools sudo dnf downgrade dnstools-<VERSION_BEFORE_2.0_beta3> sudo dnf versionlock add dnstools

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: DNSTools 2.0 - Authentication Bypass

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-2002-0613?

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

Is CVE-2002-0613 being exploited?

CVE-2002-0613 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-2002-0613 affect?

CVE-2002-0613 affects dnstools. Severity is high (CVSS 10.0). dnstools.php for DNSTools 2.0 beta 4 and earlier allows remote attackers to bypass authentication and gain privileges by setting the user_logged_in or user_dnstools_administrator parameters.

How urgent is CVE-2002-0613?

Priority 64/100. Critical severity; EPSS top 4%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

References

← Back to latest CVEs