CVE-2009-3294
The popen API function in TSRM/tsrm_win32.c in PHP before 5.2.11 and 5.3.x before 5.3.1, when running on certain Windows operating…
- 5.0MediumCVSS base score
- 2.7%Exploitation in 30 daysEPSS · top 14% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The popen API function in TSRM/tsrm_win32.c in PHP before 5.2.11 and 5.3.x before 5.3.1, when running on certain Windows operating systems, allows context-dependent attackers to cause a denial of service (crash) via a crafted (1) "e" or (2) "er" string in the second argument (aka mode), possibly related to the _fdopen function in the Microsoft C runtime library. NOTE: this might not cross privilege boundaries except in rare cases in which the mode argument is accessible to an attacker outside of an application that uses the popen function.
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 2.7% · top 14% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
References
11
- http://www.php.net/ChangeLog-5.php#5.2.11 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20091120 Re: CVE request: php 5.3.1 update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [php-announce] 20091119 5.3.1 Release announcement (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www.php.net/releases/5_2_11.php (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.php.net/ChangeLog-5.php (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20091120 CVE request: php 5.3.1 update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://bugs.php.net/bug.php?id=44683 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.php.net/releases/5_3_1.php (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20090920 Re: CVE Request -- PHP 5 - 5.2.11 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 58188 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- http://svn.php.net/viewvc?view=revision&revision=287779 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-3276 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-3294)Record last updated .