CVE-2001-0849: viralator CGI script in Viralator 0.9pre1 and earlier allows remote attackers to execute arbitrary code via a

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HIGH 7.5DOWNGRADE

CVE-2001-0849 is a high-severity flaw (CVSS 7.5) affecting viralator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

viralator CGI script in Viralator 0.9pre1 and earlier allows remote attackers to execute arbitrary code via a URL for a file being downloaded, which is insecurely passed to a call to wget.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.8% (top 14%)
CISA exploited list	No
Published	2001-12-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: duncan hall

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

Am I affected?

Timeline

2001-12-06 05:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

duncan hall viralator DOWNGRADE

Affected: 0.7 · 0.8 · 0.9_pre1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.7 (Debian / Ubuntu)

apt-cache madison viralator sudo apt install viralator=<VERSION_BEFORE_0.7> sudo apt-mark hold viralator

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

dnf --showduplicates list viralator sudo dnf downgrade viralator-<VERSION_BEFORE_0.7> sudo dnf versionlock add viralator

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-2001-0849?

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

Is CVE-2001-0849 being exploited?

CVE-2001-0849 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-2001-0849 affect?

CVE-2001-0849 affects viralator. Severity is high (CVSS 7.5). viralator CGI script in Viralator 0.9pre1 and earlier allows remote attackers to execute arbitrary code via a URL for a file being downloaded, which is insecurely passed to a call to wget.

How urgent is CVE-2001-0849?

Priority 48/100. High severity

References

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