CVE-2002-1677: 14all.cgi 1.1p15 in mrtgconfig allows remote attackers to determine the physical path to the web root director

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MEDIUM 5.0DOWNGRADE

CVE-2002-1677 is a medium-severity flaw (CVSS 5.0) affecting mrtgconfig. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

14all.cgi 1.1p15 in mrtgconfig allows remote attackers to determine the physical path to the web root directory via a request with an invalid cfg parameter, which generates an error message that reveals the path.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mrtg

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

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 21:59 UTCUpdated Record last modified

mrtg mrtgconfig DOWNGRADE

Affected: 0.5.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.5.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.5.9 (Debian / Ubuntu)

apt-cache madison mrtgconfig sudo apt install mrtgconfig=<VERSION_BEFORE_0.5.9> sudo apt-mark hold mrtgconfig

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

dnf --showduplicates list mrtgconfig sudo dnf downgrade mrtgconfig-<VERSION_BEFORE_0.5.9> sudo dnf versionlock add mrtgconfig

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.

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-2002-1677?

mrtgconfig: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-1677 being exploited?

CVE-2002-1677 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-2002-1677 affect?

CVE-2002-1677 affects mrtgconfig. Severity is medium (CVSS 5.0). 14all.cgi 1.1p15 in mrtgconfig allows remote attackers to determine the physical path to the web root directory via a request with an invalid cfg parameter, which generates an error message that reveals the path.

How urgent is CVE-2002-1677?

Priority 41/100. Public exploit reference

References

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