Is CVE-2007-0988 being actively exploited?

CVE-2007-0988 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2007-0988?

CVE-2007-0988 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2007-0988

MEDIUM · CVSS 4.3EPSS 2.4%EU EUVD

The zend_hash_init function in PHP 5 before 5.2.1 and PHP 4 before 4.4.5, when running on a 64-bit platform, allows context-dependent attackers to cause a denial of service (infinite loop) by unserializing certain integer expressions, which only cause 32-bit arguments to be used after the check for a negative value, as demonstrated by an "a:2147483649:{" argument.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-119
EPSS score: 2.4% (84th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2007-0982)
Published: February 20, 2007
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2007-0982 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
php / php
php / php
php / php
php / php
php / php
php / php
php / php
php / php
php / php

References

ftp://patches.sgi.com/support/free/security/advisories/20070201-01-P.asc(Broken Link)
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=228858(Issue Tracking, Third Party Advisory)
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01056506(Broken Link)
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01086137(Broken Link)
http://osvdb.org/32762(Broken Link)
http://rhn.redhat.com/errata/RHSA-2007-0089.html(Third Party Advisory)
http://secunia.com/advisories/24195(Third Party Advisory)
http://secunia.com/advisories/24217(Third Party Advisory)
http://secunia.com/advisories/24236(Third Party Advisory)
http://secunia.com/advisories/24248(Third Party Advisory)
http://secunia.com/advisories/24284(Third Party Advisory)
http://secunia.com/advisories/24295(Third Party Advisory)
http://secunia.com/advisories/24322(Third Party Advisory)
http://secunia.com/advisories/24419(Third Party Advisory)
http://secunia.com/advisories/24421(Third Party Advisory)
http://secunia.com/advisories/24432(Third Party Advisory)
http://secunia.com/advisories/24606(Third Party Advisory)
http://secunia.com/advisories/24642(Third Party Advisory)
http://secunia.com/advisories/25056(Third Party Advisory)
http://secunia.com/advisories/25423(Third Party Advisory)
http://secunia.com/advisories/25850(Third Party Advisory)
http://security.gentoo.org/glsa/glsa-200703-21.xml(Third Party Advisory)
http://securityreason.com/securityalert/2315(Third Party Advisory)
http://support.avaya.com/elmodocs2/security/ASA-2007-101.htm(Third Party Advisory)
http://support.avaya.com/elmodocs2/security/ASA-2007-136.htm(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDKSA-2007:048(Third Party Advisory)
http://www.novell.com/linux/security/advisories/2007_32_php.html(Broken Link)
http://www.openpkg.com/security/advisories/OpenPKG-SA-2007.010.html(Third Party Advisory)
http://www.php-security.org/MOPB/MOPB-05-2007.html(Third Party Advisory)
http://www.php.net/releases/5_2_1.php(Patch, Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2007-0076.html(Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2007-0081.html(Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2007-0082.html(Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2007-0088.html(Third Party Advisory)
http://www.securityfocus.com/archive/1/461462/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id?1017671(Third Party Advisory, VDB Entry)
http://www.trustix.org/errata/2007/0009/(Broken Link)
http://www.ubuntu.com/usn/usn-424-1(Third Party Advisory)
http://www.ubuntu.com/usn/usn-424-2(Third Party Advisory)
http://www.us.debian.org/security/2007/dsa-1264(Broken Link)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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