Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2009-4017

30
FAUCET Score

CVE-2009-4017 describes a denial-of-service vulnerability in PHP versions before 5.2.12 and 5.3.1, affecting products like Apple macOS and various Debian Linux distributions running PHP. This flaw allows remote attackers to exhaust system resources by sending multiple multipart/form-data POST requests, leading to an excessive creation of temporary files. The vulnerability has a CVSS score of 5.0, indicating a medium severity with a low attack complexity and potential for partial availability impact. While not actively exploited in the wild or on the KEV catalog, public exploit code exists, and there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.2.12CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
5.3.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.3.0:-:*:*:*:*:*:*
5.3.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.3.0:alpha1:*:*:*:*:*:*
5.3.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.3.0:alpha2:*:*:*:*:*:*
5.3.0CPE matchmatch criteria
cpe:2.3:a:php:php:5.3.0:alpha3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
12.04%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-10242 · Nov 27, 2009
This CVE's current EPSS score of 0.1204 is in the 95th percentile among its peer group of 23,725 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: php-0:4.3.2-54.ent
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: php-0:4.3.9-3.29
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php-0:5.1.6-24.el5_4.5
View patch

Vendor Advisories (1)

redhatCVE-2009-4017Moderate

PHP: resource exhaustion attack via upload requests with lots of files

Nov 20, 2009

References

lists.apple.com / archives/security-announce/2010//Mar/msg00001.html
Mailing List
marc.info
Third Party Advisory
news.php.net / php.announce/79
Mailing ListRelease Notes
seclists.org / fulldisclosure/2009/Nov/228
Mailing ListThird Party Advisory
secunia.com / advisories/37482
Broken Link
secunia.com / advisories/37821
Broken Link
secunia.com / advisories/40262
Broken Link
secunia.com / advisories/41480
Broken Link
secunia.com / advisories/41490
Broken Link
exchange.xforce.ibmcloud.com / vulnerabilities/54455
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10483
Broken Link
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6667
Broken Link
support.apple.com / kb/HT4077
Third Party Advisory
acunetix.com / blog/websecuritynews/php-multipartform-data-denial-of-service
Third Party Advisory
debian.org / security/2009/dsa-1940
Mailing ListThird Party Advisory
itrc.hp.com / service/cki/docDisplay.do
Broken Link
mandriva.com / security/advisories
Broken Link
mandriva.com / security/advisories
Broken Link
openwall.com / lists/oss-security/2009/11/20/2
Mailing ListPatch
openwall.com / lists/oss-security/2009/11/20/7
Mailing List
php.net / ChangeLog-5.php
Release NotesVendor Advisory
php.net / releases/5_2_12.php
Release Notes
php.net / releases/5_3_1.php
Release NotesVendor Advisory
securityfocus.com / archive/1/507982/100/0/threaded
Broken LinkThird Party AdvisoryVDB Entry
vupen.com / english/advisories/2009/3593
Broken Link