Is CVE-2009-4017 being actively exploited?

CVE-2009-4017 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-4017?

CVE-2009-4017 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2009-4017

MEDIUM · CVSS 5.0EPSS 12.0%EU EUVD

PHP before 5.2.12 and 5.3.x before 5.3.1 does not restrict the number of temporary files created when handling a multipart/form-data POST request, which allows remote attackers to cause a denial of service (resource exhaustion), and makes it easier for remote attackers to exploit local file inclusion vulnerabilities, via multiple requests, related to lack of support for the max_file_uploads directive.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-770
EPSS score: 12.0% (96th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-3988)
Published: November 24, 2009
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-3988 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

apple / mac os x
debian / debian linux
debian / debian linux
debian / debian linux
php / php
php / php
php / php
php / php
php / php
php / php
php / php
php / php
php / php
php / php

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Apple Mac OS X 10.6 - Apple Inc. - Common Criteria BSI-DSZ-CC-0536-2010 - archived

References

http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html(Mailing List)
http://marc.info/?l=bugtraq&m=127680701405735&w=2(Third Party Advisory)
http://news.php.net/php.announce/79(Mailing List, Release Notes)
http://seclists.org/fulldisclosure/2009/Nov/228(Mailing List, Third Party Advisory)
http://secunia.com/advisories/37482(Broken Link)
http://secunia.com/advisories/37821(Broken Link)
http://secunia.com/advisories/40262(Broken Link)
http://secunia.com/advisories/41480(Broken Link)
http://secunia.com/advisories/41490(Broken Link)
http://support.apple.com/kb/HT4077(Third Party Advisory)
http://www.acunetix.com/blog/websecuritynews/php-multipartform-data-denial-of-service/(Third Party Advisory)
http://www.debian.org/security/2009/dsa-1940(Mailing List, Third Party Advisory)
http://www.itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c02512995(Broken Link)
http://www.mandriva.com/security/advisories?name=MDVSA-2009:303(Broken Link)
http://www.mandriva.com/security/advisories?name=MDVSA-2009:305(Broken Link)
http://www.openwall.com/lists/oss-security/2009/11/20/2(Mailing List, Patch)
http://www.openwall.com/lists/oss-security/2009/11/20/7(Mailing List)
http://www.php.net/ChangeLog-5.php(Release Notes, Vendor Advisory)
http://www.php.net/releases/5_2_12.php(Release Notes)
http://www.php.net/releases/5_3_1.php(Release Notes, Vendor Advisory)
http://www.securityfocus.com/archive/1/507982/100/0/threaded(Broken Link, Third Party Advisory, VDB Entry)
http://www.vupen.com/english/advisories/2009/3593(Broken Link)
https://exchange.xforce.ibmcloud.com/vulnerabilities/54455(Third Party Advisory, VDB Entry)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10483(Broken Link)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6667(Broken Link)

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

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