CVE-2000-0172: The mtr program only uses a seteuid call when attempting to drop privileges, which could allow local users to

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HIGH 7.2WATCHLISTDOWNGRADEMITIGATE

CVE-2000-0172 is a high-severity flaw (CVSS 7.2) affecting mtr, turbolinux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The mtr program only uses a seteuid call when attempting to drop privileges, which could allow local users to gain root privileges.

Why this priority

High severity
Public exploit reference
On your watchlist

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

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Published	2000-03-03
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: matt kimball and roger wolff · turbolinux

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

Am I affected?

Timeline

2000-03-03 05:00 UTCPublished CVE record published
2026-06-16 21:51 UTCUpdated Record last modified

matt kimball and roger wolff mtr DOWNGRADE

Affected: 0.28 · 0.41

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.28

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.28 (Debian / Ubuntu)

apt-cache madison mtr sudo apt install mtr=<VERSION_BEFORE_0.28> sudo apt-mark hold mtr

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

dnf --showduplicates list mtr sudo dnf downgrade mtr-<VERSION_BEFORE_0.28> sudo dnf versionlock add mtr

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.

turbolinux turbolinux MITIGATE

Affected: 3.5b2 · 4.2 · 4.4 · 6.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.5b2

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: Matt Kimball and Roger Wolff mtr 0.28/0.41 / Turbolinux 3.5 b2/4.2/4.4/6.0 - mtr (2)

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-2000-0172?

mtr: downgrade or apply the listed mitigation; turbolinux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2000-0172 being exploited?

CVE-2000-0172 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-2000-0172 affect?

CVE-2000-0172 affects mtr, turbolinux. Severity is high (CVSS 7.2). The mtr program only uses a seteuid call when attempting to drop privileges, which could allow local users to gain root privileges.

How urgent is CVE-2000-0172?

Priority 50/100. High severity; Public exploit reference; On your watchlist

Related CVEs

CVE-2008-2357 MEDIUM 6.8 UPGRADE Stack-based buffer overflow in the split_redraw function in split.c in mtr before 0.73, when invoked with the
CVE-2004-1224 MEDIUM 4.6 DOWNGRADE Off-by-one error in the mtr_curses_keyaction function for mtr 0.55 through 0.65 allows local users to hijack r
CVE-2002-0497 LOW 2.1 DOWNGRADE Buffer overflow in mtr 0.46 and earlier, when installed setuid root, allows local users to access a raw socket

References

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