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CVE-2006-3017

24
FAUCET Score

CVE-2006-3017 describes a critical vulnerability in PHP versions before 4.4.3 and 5.x before 5.1.3, where a flaw in the zend_hash_del_key_or_index function could lead to incorrect element deletion. This prevents the 'unset' function from properly clearing variables, potentially allowing their values to be used in security-sensitive operations. The vulnerability carries a high CVSS score of 9.3, indicating a network-exploitable flaw with medium attack complexity that could result in complete compromise of confidentiality, integrity, and availability. Despite its age and severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.4.2CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:php:php:3.0:*:*:*:*:*:*:*
3.0.1CPE matchmatch criteria
cpe:2.3:a:php:php:3.0.1:*:*:*:*:*:*:*
3.0.2CPE matchmatch criteria
cpe:2.3:a:php:php:3.0.2:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:a:php:php:3.0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.14%
Probability of exploitation in next 30 days
EPSS Percentile
89.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0414 is in the 53rd percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: php-0:4.3.2-33.ent
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: php-0:4.3.9-3.15
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux AS (Advanced Server) version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux ES version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux WS version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux Advanced Workstation 2.1
View patch
redhatpatch availablevia redhat_api
Product: Stronghold 4.0 for Red Hat Enterprise Linux AS (version 2.1)
View patch

Vendor Advisories (1)

redhatCVE-2006-3017Moderate

security flaw

Jun 14, 2006

References

patches.sgi.com / support/free/security/advisories/20060701-01-U
archives.neohapsis.com / archives/fulldisclosure/2006-08/0166.html
cvs.php.net / viewcvs.cgi/Zend/zend_hash.c
cvs.php.net / viewcvs.cgi/Zend/zend_hash.c
rhn.redhat.com / errata/RHSA-2006-0549.html
secunia.com / advisories/19927
Vendor Advisory
secunia.com / advisories/21031
Vendor Advisory
secunia.com / advisories/21050
Vendor Advisory
secunia.com / advisories/21125
Vendor Advisory
secunia.com / advisories/21135
Vendor Advisory
secunia.com / advisories/21202
Vendor Advisory
secunia.com / advisories/21252
Vendor Advisory
secunia.com / advisories/21723
Vendor Advisory
secunia.com / advisories/22225
Vendor Advisory
secunia.com / advisories/22713
Vendor Advisory
securitytracker.com / id
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/27396
issues.rpath.com / browse/RPL-683
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10118
support.avaya.com / elmodocs2/security/ASA-2006-175.htm
usn.ubuntu.com / 320-1
debian.org / security/2006/dsa-1206
hardened-php.net / hphp/zend_hash_del_key_or_index_vulnerability.html
mandriva.com / security/advisories
novell.com / linux/security/advisories/2006_31_php.html
novell.com / linux/security/advisories/2006_34_php4.html
osvdb.org / 25255
osvdb.org / 26466
php.net / release_5_1_3.php
redhat.com / support/errata/RHSA-2006-0567.html
redhat.com / support/errata/RHSA-2006-0568.html
securityfocus.com / archive/1/442437/100/0/threaded
securityfocus.com / archive/1/447866/100/0/threaded
securityfocus.com / bid/17843
turbolinux.com / security/2006/TLSA-2006-38.txt