CVE-2008-6669: viewrq.php in nweb2fax 0.2.7 and earlier allows remote attackers to execute arbitrary code via shell metachara

Q: How do I fix CVE-2008-6669?

nweb2fax: upgrade to newer than 0.2.7. Exact commands for each OS are on this page.

Q: Is CVE-2008-6669 being exploited?

CVE-2008-6669 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-2008-6669 affect?

CVE-2008-6669 affects nweb2fax. Severity is high (CVSS 7.5). viewrq.php in nweb2fax 0.2.7 and earlier allows remote attackers to execute arbitrary code via shell metacharacters in the var_filename parameter in a (1) tif or (2) pdf format action.

Q: How urgent is CVE-2008-6669?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2008-6669 is a high-severity flaw (CVSS 7.5) affecting nweb2fax. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

viewrq.php in nweb2fax 0.2.7 and earlier allows remote attackers to execute arbitrary code via shell metacharacters in the var_filename parameter in a (1) tif or (2) pdf format action.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Weakness	CWE-78
Published	2009-04-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: dirk bartley

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

Am I affected?

Timeline

2009-04-08 10:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

dirk bartley nweb2fax UPGRADE

Affected: <= 0.2.7 · 0.1 · 0.2 · 0.2.1 · 0.2.4 · 0.2.5 · 0.2.6

Fixed in: newer than 0.2.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy nweb2fax || rpm -q nweb2fax || nweb2fax --version

2. UPGRADE to newer than 0.2.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade nweb2fax

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nweb2fax

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: nweb2fax 0.2.7 - Multiple Vulnerabilities

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-2008-6669?

nweb2fax: upgrade to newer than 0.2.7. Exact commands for each OS are on this page.

Is CVE-2008-6669 being exploited?

CVE-2008-6669 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-2008-6669 affect?

CVE-2008-6669 affects nweb2fax. Severity is high (CVSS 7.5). viewrq.php in nweb2fax 0.2.7 and earlier allows remote attackers to execute arbitrary code via shell metacharacters in the var_filename parameter in a (1) tif or (2) pdf format action.

How urgent is CVE-2008-6669?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-6668 MEDIUM 5.0 UPGRADE Multiple directory traversal vulnerabilities in nweb2fax 0.2.7 and earlier allow remote attackers to read arbi

References

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