CVE-2006-4124: The libXm library in LessTif 0.95.0 and earlier allows local users to gain privileges via the DEBUG_FILE envir

Q: How do I fix CVE-2006-4124?

lesstif: upgrade to newer than 0.95.0. Exact commands for each OS are on this page.

Q: Is CVE-2006-4124 being exploited?

CVE-2006-4124 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-2006-4124 affect?

CVE-2006-4124 affects lesstif. Severity is medium (CVSS 4.6). The libXm library in LessTif 0.95.0 and earlier allows local users to gain privileges via the DEBUG_FILE environment variable, which is used to create world-writable files when libXm is run from a setuid program.

Q: How urgent is CVE-2006-4124?

Priority 31/100. Public exploit reference

Routine

MEDIUM 4.6UPGRADE

CVE-2006-4124 is a medium-severity flaw (CVSS 4.6) affecting lesstif. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The libXm library in LessTif 0.95.0 and earlier allows local users to gain privileges via the DEBUG_FILE environment variable, which is used to create world-writable files when libXm is run from a setuid program.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Published	2006-08-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: lesstif

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

Am I affected?

Timeline

2006-08-14 23:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

lesstif lesstif UPGRADE

Affected: <= 0.95.0 · 0.93.94

Fixed in: newer than 0.95.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.95.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lesstif

Note

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

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-2006-4124?

lesstif: upgrade to newer than 0.95.0. Exact commands for each OS are on this page.

Is CVE-2006-4124 being exploited?

CVE-2006-4124 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-2006-4124 affect?

CVE-2006-4124 affects lesstif. Severity is medium (CVSS 4.6). The libXm library in LessTif 0.95.0 and earlier allows local users to gain privileges via the DEBUG_FILE environment variable, which is used to create world-writable files when libXm is run from a setuid program.

How urgent is CVE-2006-4124?

Priority 31/100. Public exploit reference

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References

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