CVE-2001-0440: Buffer overflow in logging functions of licq before 1.0.3 allows remote attackers to cause a denial of service

Q: How do I fix CVE-2001-0440?

licq: upgrade to newer than 1.0.2; linux: mitigate or apply the listed mitigation; mandrake linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2001-0440 being exploited?

CVE-2001-0440 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-2001-0440 affect?

CVE-2001-0440 affects licq, linux, mandrake linux. Severity is high (CVSS 7.5). Buffer overflow in logging functions of licq before 1.0.3 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands.

Q: How urgent is CVE-2001-0440?

Priority 59/100. High severity; EPSS top 8%: very likely to be exploited; Public exploit reference; On your watchlist

This month

HIGH 7.5WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2001-0440 is a high-severity flaw (CVSS 7.5) affecting licq, linux, mandrake linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in logging functions of licq before 1.0.3 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands.

Why this priority

High severity
EPSS top 8%: very likely to be exploited
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.6% (top 8%)
CISA exploited list	No
Published	2001-07-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: conectiva · licq · mandrakesoft

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

Am I affected?

Timeline

2001-07-02 04:00 UTCPublished CVE record published
2026-06-16 21:54 UTCUpdated Record last modified

licq licq UPGRADE

Affected: <= 1.0.2

Fixed in: newer than 1.0.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.0.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade licq

Note

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

conectiva linux MITIGATE

Affected: 4.0 · 4.0es · 4.1 · 4.2 · 5.0 · 5.1 · 6.0 · ecommerce

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

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.

mandrakesoft mandrake linux MITIGATE

Affected: 7.1 · 7.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.1

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.

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: LICQ 0.85/1.0.1/1.0.2 - Remote Buffer Overflow

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-2001-0440?

licq: upgrade to newer than 1.0.2; linux: mitigate or apply the listed mitigation; mandrake linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2001-0440 being exploited?

CVE-2001-0440 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-2001-0440 affect?

CVE-2001-0440 affects licq, linux, mandrake linux. Severity is high (CVSS 7.5). Buffer overflow in logging functions of licq before 1.0.3 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands.

How urgent is CVE-2001-0440?

Priority 59/100. High severity; EPSS top 8%: very likely to be exploited; Public exploit reference; On your watchlist

Related CVEs

CVE-2008-1996 MEDIUM 5.0 DOWNGRADE licq before 1.3.6 allows remote attackers to cause a denial of service (file-descriptor exhaustion and applica
CVE-2003-0363 HIGH 7.5 DOWNGRADE Format string vulnerability in LICQ 1.2.6, 1.0.3 and possibly other versions allows remote attackers to perfor
CVE-2002-0251 HIGH 7.5 DOWNGRADE Buffer overflow in licq 1.0.4 and earlier allows remote attackers to cause a denial of service (crash) and pos
CVE-2001-0439 HIGH 7.5 UPGRADE MITIGATE licq before 1.0.3 allows remote attackers to execute arbitrary commands via shell metacharacters in a URL.

References

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