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CVE-2006-7226

14
FAUCET Score

CVE-2006-7226 describes a denial-of-service vulnerability in the Perl-Compatible Regular Expression (PCRE) library prior to version 6.7, affecting products like Red Hat Enterprise Linux. The flaw stems from improper memory allocation calculations for specific complex regular expressions, allowing attackers to trigger errors or crashes. Rated with a CVSS score of 4.3 (medium severity), it requires medium attack complexity and results in partial availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:as:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:es:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:ws:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.60%
Probability of exploitation in next 30 days
EPSS Percentile
73.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0160 is in the 49th percentile among its peer group of 19,956 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: pcre-0:4.5-4.el4_6.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: pcre-0:6.6-2.el5_1.7
View patch

Vendor Advisories (1)

redhatCVE-2006-7226Important

pcre miscalculation of memory requirements for repeated subpattern containing a named recursion or subroutine reference

Nov 13, 2007

References

lists.opensuse.org / opensuse-security-announce/2008-01/msg00006.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/28041
secunia.com / advisories/28658
exchange.xforce.ibmcloud.com / vulnerabilities/40020
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11545
support.avaya.com / elmodocs2/security/ASA-2007-505.htm
mandriva.com / security/advisories
pcre.org / changelog.txt
redhat.com / support/errata/RHSA-2007-1059.html
redhat.com / support/errata/RHSA-2007-1068.html
securityfocus.com / bid/26727