CVE-2006-4812
HIGH · CVSS 10.0EPSS 20.7%EU EUVD
Integer overflow in PHP 5 up to 5.1.6 and 4 before 4.3.0 allows remote attackers to execute arbitrary code via an argument to the unserialize PHP function with a large value for the number of array elements, which triggers the overflow in the Zend Engine ecalloc function (Zend/zend_alloc.c).
Key facts
- CVSS score
- 10.0 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-94
- EPSS score
- 20.7% (98th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2006-4799)
- Published
- October 10, 2006
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2006-4799 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
References
- http://cvs.php.net/viewvc.cgi/ZendEngine2/zend_alloc.c?r1=1.161&r2=1.162
- http://lists.suse.com/archive/suse-security-announce/2006-Oct/0002.html
- http://rhn.redhat.com/errata/RHSA-2006-0688.html
- http://rhn.redhat.com/errata/RHSA-2006-0708.html(Patch, Vendor Advisory)
- http://secunia.com/advisories/22280(Patch, Vendor Advisory)
- http://secunia.com/advisories/22281
- http://secunia.com/advisories/22300
- http://secunia.com/advisories/22331
- http://secunia.com/advisories/22338
- http://secunia.com/advisories/22533
- http://secunia.com/advisories/22538
- http://secunia.com/advisories/22650
- http://securityreason.com/securityalert/1691
- http://securitytracker.com/id?1016984(Patch)
- http://support.avaya.com/elmodocs2/security/ASA-2006-223.htm
- http://support.avaya.com/elmodocs2/security/ASA-2006-234.htm
- http://www.gentoo.org/security/en/glsa/glsa-200610-14.xml
- http://www.hardened-php.net/advisory_092006.133.html(Vendor Advisory)
- http://www.hardened-php.net/files/CVE-2006-4812.patch(Patch)
- http://www.securityfocus.com/archive/1/448014/100/0/threaded
- http://www.securityfocus.com/archive/1/448953/100/0/threaded
- http://www.securityfocus.com/bid/20349
- http://www.trustix.org/errata/2006/0055
- http://www.ubuntu.com/usn/usn-362-1
- http://www.vupen.com/english/advisories/2006/3922
- https://exchange.xforce.ibmcloud.com/vulnerabilities/29362
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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