CVE-2009-3558

Name: CVE-2009-3558
Creator: NVD / NIST
Published: 2009-11-23T17:30:00.53+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.08%

Last modified Jun 16, 2026

CVE-2009-3558 is a vulnerability of currently unknown severity. The posix_mkfifo function in ext/posix/posix.c in PHP before 5.2.12 and 5.3.x before 5.3.1 allows context-dependent attackers to bypass open_basedir restrictions, and create FIFO files, via the pathname and mode arguments, as demonstrated by creating a .htaccess file.. EPSS estimates a 2.08% chance of exploitation in the next 30 days.

Description

The posix_mkfifo function in ext/posix/posix.c in PHP before 5.2.12 and 5.3.x before 5.3.1 allows context-dependent attackers to bypass open_basedir restrictions, and create FIFO files, via the pathname and mode arguments, as demonstrated by creating a .htaccess file.

Metrics

EPSS Probability

2.08%

79.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Php	Php	<= 5.2.10
Php	Php	1.0
Php	Php	2.0
Php	Php	2.0b10
Php	Php	3.0
Php	Php	3.0.1
Php	Php	3.0.2
Php	Php	3.0.3
Php	Php	3.0.4
Php	Php	3.0.5
Php	Php	3.0.6
Php	Php	3.0.7
Php	Php	3.0.8
Php	Php	3.0.9
Php	Php	3.0.10
Php	Php	3.0.11
Php	Php	3.0.12
Php	Php	3.0.13
Php	Php	3.0.14
Php	Php	3.0.15
Php	Php	3.0.16
Php	Php	3.0.17
Php	Php	3.0.18
Php	Php	4.0
Php	Php	4.0.0
Php	Php	4.0.1
Php	Php	4.0.2
Php	Php	4.0.3
Php	Php	4.0.4
Php	Php	4.0.5
Php	Php	4.0.6
Php	Php	4.0.7
Php	Php	4.1.0
Php	Php	4.1.1
Php	Php	4.1.2
Php	Php	4.2.0
Php	Php	4.2.1
Php	Php	4.2.2
Php	Php	4.2.3
Php	Php	4.3.0
Php	Php	4.3.1
Php	Php	4.3.2
Php	Php	4.3.7
Php	Php	4.3.10
Php	Php	4.3.11
Php	Php	4.4.2
Php	Php	4.4.7
Php	Php	4.4.8
Php	Php	5.0.0
Php	Php	5.0.3

Showing 50 of 55 affected configurations. See NVD for the full list.

References

Timeline

Published: Nov 23, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-3558?

How severe is CVE-2009-3558?

Severity scoring for CVE-2009-3558 is pending analysis. The EPSS model estimates a 2.08% probability of exploitation in the next 30 days.

How do I fix CVE-2009-3558?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-3558?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST