CVE-2001-0670: Buffer overflow in BSD line printer daemon (in.lpd or lpd) in various BSD-based operating systems allows remot

Q: How do I fix CVE-2001-0670?

bsd: upgrade to newer than 4.1; freebsd: upgrade to newer than 4.3; netbsd: upgrade to newer than 1.5.1. Exact commands for each OS are on this page.

Q: Is CVE-2001-0670 being exploited?

CVE-2001-0670 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-2001-0670 affect?

CVE-2001-0670 affects bsd, freebsd, netbsd. Severity is high (CVSS 7.5). Buffer overflow in BSD line printer daemon (in.lpd or lpd) in various BSD-based operating systems allows remote attackers to execute arbitrary code via an incomplete print job followed by a request to display the printer queue.

Q: How urgent is CVE-2001-0670?

Priority 50/100. High severity; EPSS top 6%: very likely to be exploited

This month

HIGH 7.5UPGRADEUPGRADEUPGRADE

CVE-2001-0670 is a high-severity flaw (CVSS 7.5) affecting bsd, freebsd, netbsd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in BSD line printer daemon (in.lpd or lpd) in various BSD-based operating systems allows remote attackers to execute arbitrary code via an incomplete print job followed by a request to display the printer queue.

Why this priority

High severity
EPSS top 6%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	6.6% (top 6%)
CISA exploited list	No
Published	2001-10-03
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: bsd · freebsd · netbsd · openbsd

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

Am I affected?

Timeline

2001-10-03 04:00 UTCPublished CVE record published
2026-06-16 21:54 UTCUpdated Record last modified

bsd bsd UPGRADE

Affected: <= 4.1

Fixed in: newer than 4.1

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

freebsd freebsd UPGRADE

Affected: <= 4.3

Fixed in: newer than 4.3

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netbsd netbsd UPGRADE

Affected: <= 1.5.1

Fixed in: newer than 1.5.1

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

openbsd openbsd MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2001-0670?

bsd: upgrade to newer than 4.1; freebsd: upgrade to newer than 4.3; netbsd: upgrade to newer than 1.5.1. Exact commands for each OS are on this page.

Is CVE-2001-0670 being exploited?

CVE-2001-0670 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-2001-0670 affect?

CVE-2001-0670 affects bsd, freebsd, netbsd. Severity is high (CVSS 7.5). Buffer overflow in BSD line printer daemon (in.lpd or lpd) in various BSD-based operating systems allows remote attackers to execute arbitrary code via an incomplete print job followed by a request to display the printer queue.

How urgent is CVE-2001-0670?

Priority 50/100. High severity; EPSS top 6%: very likely to be exploited

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References

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