CVE-2002-0180: Buffer overflow in Webalizer 2.01-06, when configured to use reverse DNS lookups, allows remote attackers to e

This month

HIGH 7.5DOWNGRADE

CVE-2002-0180 is a high-severity flaw (CVSS 7.5) affecting webalizer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in Webalizer 2.01-06, when configured to use reverse DNS lookups, allows remote attackers to execute arbitrary code by connecting to the monitored web server from an IP address that resolves to a long hostname.

Why this priority

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

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.4% (top 9%)
CISA exploited list	No
Published	2002-04-22
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: bradford barrett

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

Am I affected?

Timeline

2002-04-22 04:00 UTCPublished CVE record published
2026-06-16 21:56 UTCUpdated Record last modified

bradford barrett webalizer DOWNGRADE

Affected: 2.0.1.6 · 2.0.1.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.1.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0.1.6 (Debian / Ubuntu)

apt-cache madison webalizer sudo apt install webalizer=<VERSION_BEFORE_2.0.1.6> sudo apt-mark hold webalizer

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

dnf --showduplicates list webalizer sudo dnf downgrade webalizer-<VERSION_BEFORE_2.0.1.6> sudo dnf versionlock add webalizer

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-2002-0180?

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

Is CVE-2002-0180 being exploited?

CVE-2002-0180 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-2002-0180 affect?

CVE-2002-0180 affects webalizer. Severity is high (CVSS 7.5). Buffer overflow in Webalizer 2.01-06, when configured to use reverse DNS lookups, allows remote attackers to execute arbitrary code by connecting to the monitored web server from an IP address that resolves to a long hostname.

How urgent is CVE-2002-0180?

Priority 49/100. High severity; EPSS top 9%: very likely to be exploited

Related CVEs

CVE-2001-0835 HIGH 7.5 UPGRADE Cross-site scripting vulnerability in Webalizer 2.01-06, and possibly other versions, allows remote attackers

References

← Back to latest CVEs