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CVE-2006-7243

21
FAUCET Score

CVE-2006-7243 describes a vulnerability in PHP versions prior to 5.3.4 where the null byte character (\0) in a pathname could bypass access restrictions, potentially allowing attackers to execute unintended file types. This medium-severity vulnerability (CVSS 5.0) has a low attack complexity and could lead to partial integrity compromise, but no confidentiality or availability impact. While there is no known active exploitation, public exploit code, or Metasploit module, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.3.3CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:php:php:1.0:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:php:php:2.0:*:*:*:*:*:*:*
2.0b10CPE matchmatch criteria
cpe:2.3:a:php:php:2.0b10:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:php:php:3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.36%
Probability of exploitation in next 30 days
EPSS Percentile
91.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0536 is in the 89th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53-0:5.3.3-21.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php-0:5.1.6-44.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php-0:5.3.3-26.el6
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: php

Vendor Advisories (1)

redhatCVE-2006-7243Moderate

php: paths with NULL character were considered valid

Dec 18, 2006

References

bugs.php.net / 39863
ExploitPatch
lists.apple.com / archives/security-announce/2011/Mar/msg00006.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/158616.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/158915.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/159031.html
marc.info
marc.info
openwall.com / lists/oss-security/2010/11/18/4
Patch
openwall.com / lists/oss-security/2010/11/18/5
Patch
openwall.com / lists/oss-security/2010/12/09/10
Patch
openwall.com / lists/oss-security/2010/12/09/11
openwall.com / lists/oss-security/2010/12/09/9
Patch
rhn.redhat.com / errata/RHSA-2013-1307.html
rhn.redhat.com / errata/RHSA-2013-1615.html
rhn.redhat.com / errata/RHSA-2014-0311.html
secunia.com / advisories/55078
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12569
support.apple.com / kb/HT4581
svn.php.net / viewvc
Patch
svn.php.net / viewvc
Patch
madirish.net
mandriva.com / security/advisories
php.net / archive/2010.php
php.net / ChangeLog-5.php
php.net / releases/5_3_4.php
securityfocus.com / bid/44951