CVE-2006-6767: oftpd before 0.3.7 allows remote attackers to cause a denial of service (daemon abort) via a (1) LPRT or (2) L

Q: How do I fix CVE-2006-6767?

oftpd: upgrade to 0.3.7. Exact commands for each OS are on this page.

Q: Is CVE-2006-6767 being exploited?

CVE-2006-6767 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-2006-6767 affect?

CVE-2006-6767 affects oftpd. Severity is high (CVSS 7.5). oftpd before 0.3.7 allows remote attackers to cause a denial of service (daemon abort) via a (1) LPRT or (2) LPASV command with an unsupported address family, which triggers an assertion failure.

Q: How urgent is CVE-2006-6767?

Priority 60/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2006-6767 is a high-severity flaw (CVSS 7.5) affecting oftpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

oftpd before 0.3.7 allows remote attackers to cause a denial of service (daemon abort) via a (1) LPRT or (2) LPASV command with an unsupported address family, which triggers an assertion failure.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	6.9% (top 6%)
CISA exploited list	No
Weakness	CWE-617
Published	2007-01-16
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: time-travellers

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

Am I affected?

Timeline

2007-01-16 19:28 UTCPublished CVE record published
2026-06-16 22:33 UTCUpdated Record last modified

time-travellers oftpd UPGRADE

Affected: < 0.3.7

Fixed in: 0.3.7

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.3.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade oftpd

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade oftpd

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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: Oftpd 0.3.7 - Unsupported Address Family Remote Denial of Service

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-2006-6767?

oftpd: upgrade to 0.3.7. Exact commands for each OS are on this page.

Is CVE-2006-6767 being exploited?

CVE-2006-6767 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-2006-6767 affect?

CVE-2006-6767 affects oftpd. Severity is high (CVSS 7.5). oftpd before 0.3.7 allows remote attackers to cause a denial of service (daemon abort) via a (1) LPRT or (2) LPASV command with an unsupported address family, which triggers an assertion failure.

How urgent is CVE-2006-6767?

Priority 60/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2005-2239 MEDIUM 5.0 DOWNGRADE oftpd 0.3.7 allows remote attackers to cause a denial of service via a USER command with a large number of nul
CVE-2004-0376 MEDIUM 5.0 UPGRADE oftpd 0.3.6 and earlier allows remote attackers to cause a denial of service (crash) via a PORT command with a

References

← Back to latest CVEs