CVE-2006-4140: Directory traversal vulnerability in IPCheck Server Monitor before 5.3.3.639/640 allows remote attackers to re

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MEDIUM 5.0DOWNGRADE

CVE-2006-4140 is a medium-severity flaw (CVSS 5.0) affecting server monitor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in IPCheck Server Monitor before 5.3.3.639/640 allows remote attackers to read arbitrary files via modified .. (dot dot) sequences in the URL, including (1) "..%2f" (encoded "/" slash), "..../" (multiple dot), and "..%255c../" (double-encoded "\" backslash).

Why this priority

EPSS top 9%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	4.4% (top 9%)
CISA exploited list	No
Published	2006-08-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ipcheck

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

ipcheck server monitor DOWNGRADE

Affected: 4.3.1.368 · 4.3.1.382 · 4.4.1.521 · 4.4.1.522 · 5.0.1.272 · 5.0.1.299 · 5.0.1.309 · 5.0.1.321

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.3.1.368

1. Check installed version

apt-cache policy server-monitor || rpm -q server-monitor || server-monitor --version

2. No fixed release: DOWNGRADE to a release before 4.3.1.368 (Debian / Ubuntu)

apt-cache madison server-monitor sudo apt install server-monitor=<VERSION_BEFORE_4.3.1.368> sudo apt-mark hold server-monitor

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

dnf --showduplicates list server-monitor sudo dnf downgrade server-monitor-<VERSION_BEFORE_4.3.1.368> sudo dnf versionlock add server-monitor

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.

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: IPCheck Server Monitor 5.x - Directory Traversal

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-2006-4140?

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

Is CVE-2006-4140 being exploited?

CVE-2006-4140 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-2006-4140 affect?

CVE-2006-4140 affects server monitor. Severity is medium (CVSS 5.0). Directory traversal vulnerability in IPCheck Server Monitor before 5.3.3.639/640 allows remote attackers to read arbitrary files via modified .. (dot dot) sequences in the URL, including (1) "..%2f" (encoded "/" slash), "..../" (multiple do

How urgent is CVE-2006-4140?

Priority 45/100. EPSS top 9%: very likely to be exploited; Public exploit reference

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References

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