CVE-2008-6938: Pi3Web 2.0.3 before PL2, when installed on Windows as a desktop application and without using the Pi3Web/Conf/

Q: How do I fix CVE-2008-6938?

pi3web: upgrade to newer than 2.0.3_pl1. Exact commands for each OS are on this page.

Q: Is CVE-2008-6938 being exploited?

CVE-2008-6938 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-2008-6938 affect?

CVE-2008-6938 affects pi3web. Severity is medium (CVSS 4.3). Pi3Web 2.0.3 before PL2, when installed on Windows as a desktop application and without using the Pi3Web/Conf/Intenet.pi3, allows remote attackers to cause a denial of service (crash or hang) and obtain the full pathname of the server via a

Q: How urgent is CVE-2008-6938?

Priority 45/100. EPSS top 2%: very likely to be exploited; Public exploit reference

This week

MEDIUM 4.3UPGRADE

CVE-2008-6938 is a medium-severity flaw (CVSS 4.3) affecting pi3web. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Pi3Web 2.0.3 before PL2, when installed on Windows as a desktop application and without using the Pi3Web/Conf/Intenet.pi3, allows remote attackers to cause a denial of service (crash or hang) and obtain the full pathname of the server via a request to a file in the ISAPI directory that is not an executable DLL, which triggers the crash when the DLL load fails, as demonstrated using Isapi\users.txt.

Why this priority

EPSS top 2%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	26.5% (top 2%)
CISA exploited list	No
Weakness	CWE-20
Published	2009-08-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: holger zimmermann

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

Am I affected?

Timeline

2009-08-11 21:00 UTCPublished CVE record published
2026-06-16 23:03 UTCUpdated Record last modified

holger zimmermann pi3web UPGRADE

Affected: <= 2.0.3_pl1 · 1.0.1 · 2.0 · 2.0.1 · 2.0.2_beta_1

Fixed in: newer than 2.0.3_pl1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pi3web || rpm -q pi3web || pi3web --version

2. UPGRADE to newer than 2.0.3_pl1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pi3web

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pi3web

Note

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

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: Pi3Web 2.0.3 - 'ISAPI' Remote Denial of Service
Metasploit: Pi3Web ISAPI DoS

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-2008-6938?

pi3web: upgrade to newer than 2.0.3_pl1. Exact commands for each OS are on this page.

Is CVE-2008-6938 being exploited?

CVE-2008-6938 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-2008-6938 affect?

CVE-2008-6938 affects pi3web. Severity is medium (CVSS 4.3). Pi3Web 2.0.3 before PL2, when installed on Windows as a desktop application and without using the Pi3Web/Conf/Intenet.pi3, allows remote attackers to cause a denial of service (crash or hang) and obtain the full pathname of the server via a

How urgent is CVE-2008-6938?

Priority 45/100. EPSS top 2%: very likely to be exploited; Public exploit reference

Software pages

Windows vulnerabilities

References

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