CVE-2006-5465

Buffer overflow in PHP before 5.2.0 allows remote attackers to execute arbitrary code via crafted...

7.5 HighFix available

Buffer overflow in PHP before 5.2.0 allows remote attackers to execute arbitrary code via crafted UTF-8 inputs to the (1) htmlentities or (2) htmlspecialchars functions.

Exploit likelihood

10.3%Down 1.9 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Buffer overflow in PHP before 5.2.0 allows remote attackers to execute arbitrary code via crafted UTF-8 inputs to the (1) htmlentities or (2) htmlspecialchars functions.

Record: CVE-2006-5465
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE List No score

Buffer overflow in PHP before 5.2.0 allows remote attackers to execute arbitrary code via crafted UTF-8 inputs to the (1) htmlentities or (2) htmlspecialchars functions.

Record: CVE-2006-5465
Updated: 2026-11-02

EUVDEUVD-2006-5450 No score

Buffer overflow in PHP before 5.2.0 allows remote attackers to execute arbitrary code via crafted UTF-8 inputs to the (1) htmlentities or (2) htmlspecialchars functions.

Record: EUVD-2006-5450
Updated: 2026-11-03

GitHub AdvisoriesGHSA-6vhv-2cm2-pw8c No score

Buffer overflow in PHP before 5.2.0 allows remote attackers to execute arbitrary code via crafted...

Buffer overflow in PHP before 5.2.0 allows remote attackers to execute arbitrary code via crafted UTF-8 inputs to the (1) htmlentities or (2) htmlspecialchars functions.

Record: GHSA-6vhv-2cm2-pw8c
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`php4` Debian:3.1 From an advisory covering 4 CVEs	before 4:4.3.10-18, plus listed versions 4:4.3.10-154:4.3.10-164:4.3.10-17	4:4.3.10-18
`php` Red Hat:enterprise_linux:2.1::as	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-devel` Red Hat:enterprise_linux:2.1::as	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-imap` Red Hat:enterprise_linux:2.1::as	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-ldap` Red Hat:enterprise_linux:2.1::as	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-manual` Red Hat:enterprise_linux:2.1::as	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-mysql` Red Hat:enterprise_linux:2.1::as	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-odbc` Red Hat:enterprise_linux:2.1::as	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-pgsql` Red Hat:enterprise_linux:2.1::as	before 0:4.1.2-2.13	0:4.1.2-2.13
`php` Red Hat:enterprise_linux:2.1::aw	before 0:4.1.2-2.13	0:4.1.2-2.13

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Affected packages
Package	Affected	Fixed
`php-devel` Red Hat:enterprise_linux:2.1::aw	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-imap` Red Hat:enterprise_linux:2.1::aw	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-ldap` Red Hat:enterprise_linux:2.1::aw	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-manual` Red Hat:enterprise_linux:2.1::aw	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-mysql` Red Hat:enterprise_linux:2.1::aw	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-odbc` Red Hat:enterprise_linux:2.1::aw	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-pgsql` Red Hat:enterprise_linux:2.1::aw	before 0:4.1.2-2.13	0:4.1.2-2.13
`php` Red Hat:enterprise_linux:2.1::es	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-devel` Red Hat:enterprise_linux:2.1::es	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-imap` Red Hat:enterprise_linux:2.1::es	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-ldap` Red Hat:enterprise_linux:2.1::es	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-manual` Red Hat:enterprise_linux:2.1::es	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-mysql` Red Hat:enterprise_linux:2.1::es	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-odbc` Red Hat:enterprise_linux:2.1::es	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-pgsql` Red Hat:enterprise_linux:2.1::es	before 0:4.1.2-2.13	0:4.1.2-2.13
`php` Red Hat:enterprise_linux:2.1::ws	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-devel` Red Hat:enterprise_linux:2.1::ws	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-imap` Red Hat:enterprise_linux:2.1::ws	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-ldap` Red Hat:enterprise_linux:2.1::ws	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-manual` Red Hat:enterprise_linux:2.1::ws	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-mysql` Red Hat:enterprise_linux:2.1::ws	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-odbc` Red Hat:enterprise_linux:2.1::ws	before 0:4.1.2-2.13	0:4.1.2-2.13
`php-pgsql` Red Hat:enterprise_linux:2.1::ws	before 0:4.1.2-2.13	0:4.1.2-2.13
`php` Red Hat:enterprise_linux:3::as	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-debuginfo` Red Hat:enterprise_linux:3::as	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-devel` Red Hat:enterprise_linux:3::as	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-imap` Red Hat:enterprise_linux:3::as	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-ldap` Red Hat:enterprise_linux:3::as	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-mysql` Red Hat:enterprise_linux:3::as	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-odbc` Red Hat:enterprise_linux:3::as	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-pgsql` Red Hat:enterprise_linux:3::as	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php` Red Hat:enterprise_linux:3::desktop	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-debuginfo` Red Hat:enterprise_linux:3::desktop	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-devel` Red Hat:enterprise_linux:3::desktop	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-imap` Red Hat:enterprise_linux:3::desktop	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-ldap` Red Hat:enterprise_linux:3::desktop	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-mysql` Red Hat:enterprise_linux:3::desktop	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-odbc` Red Hat:enterprise_linux:3::desktop	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-pgsql` Red Hat:enterprise_linux:3::desktop	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php` Red Hat:enterprise_linux:3::es	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-debuginfo` Red Hat:enterprise_linux:3::es	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-devel` Red Hat:enterprise_linux:3::es	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-imap` Red Hat:enterprise_linux:3::es	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-ldap` Red Hat:enterprise_linux:3::es	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-mysql` Red Hat:enterprise_linux:3::es	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-odbc` Red Hat:enterprise_linux:3::es	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-pgsql` Red Hat:enterprise_linux:3::es	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php` Red Hat:enterprise_linux:3::ws	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-debuginfo` Red Hat:enterprise_linux:3::ws	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-devel` Red Hat:enterprise_linux:3::ws	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-imap` Red Hat:enterprise_linux:3::ws	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-ldap` Red Hat:enterprise_linux:3::ws	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-mysql` Red Hat:enterprise_linux:3::ws	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-odbc` Red Hat:enterprise_linux:3::ws	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php-pgsql` Red Hat:enterprise_linux:3::ws	before 0:4.3.2-37.ent	0:4.3.2-37.ent
`php` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-debuginfo` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-devel` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-domxml` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-gd` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-imap` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-ldap` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-mbstring` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-mysql` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-ncurses` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-odbc` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-pear` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-pgsql` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-snmp` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-xmlrpc` Red Hat:enterprise_linux:4::as	before 0:4.3.9-3.22	0:4.3.9-3.22
`php` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-debuginfo` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-devel` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-domxml` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-gd` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-imap` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-ldap` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-mbstring` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-mysql` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-ncurses` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-odbc` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-pear` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-pgsql` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-snmp` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-xmlrpc` Red Hat:enterprise_linux:4::desktop	before 0:4.3.9-3.22	0:4.3.9-3.22
`php` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-debuginfo` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-devel` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-domxml` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-gd` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-imap` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-ldap` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-mbstring` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-mysql` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-ncurses` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-odbc` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-pear` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-pgsql` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-snmp` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-xmlrpc` Red Hat:enterprise_linux:4::es	before 0:4.3.9-3.22	0:4.3.9-3.22
`php` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-debuginfo` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-devel` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-domxml` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-gd` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-imap` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-ldap` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-mbstring` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-mysql` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-ncurses` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-odbc` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-pear` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-pgsql` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-snmp` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php-xmlrpc` Red Hat:enterprise_linux:4::ws	before 0:4.3.9-3.22	0:4.3.9-3.22
`php` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-bcmath` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-dba` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-debuginfo` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-devel` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-gd` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-imap` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-ldap` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-mbstring` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-mysql` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-ncurses` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-odbc` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-pdo` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-pgsql` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-snmp` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-soap` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-xml` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5
`php-xmlrpc` Red Hat:rhel_application_stack:1	before 0:5.1.4-1.el4s1.5	0:5.1.4-1.el4s1.5

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2006-5465 is a high vulnerability (CVSS 7.5) in Php, published November 4, 2006. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 10.3%, the 95th percentile. Fixed in php 0:4.1.2-2.13.

References

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