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Servers and applications

CVE-2007-1889

Integer signedness error in the _zend_mm_alloc_int function in the Zend Memory Manager in PHP 5.2.0 allows remote attackers to execute arbitrary code via a large emalloc request, related to an incorrect signed long cast, as demonstrated via the HTTP SOAP client in PHP, and via a call to msg_receive with the largest positive integer value of maxsize.

Severity
High 7.5
Published
6 Apr 2007
Last changed
16 Jun 2026
Added to UpHeron
14 Oct 2026
Exploit chance
3.1% in the next 30 daysHigher than 88% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • Version 5.2.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2007-1889
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2007-1889