The popen API function in TSRM/tsrm_win32.c in PHP before 5.2.11 and 5.3.x before 5.3.1…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-134 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | 5.2.0 to before 5.2.11; 5.3.0 to before 5.3.1 | Vulnerable | PHP |
| cpe:2.3:o:microsoft:windows_7:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_xp:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:* Versions 5.2.0 to before 5.2.11; 5.3.0 to before 5.3.1 Vulnerable ·PHP
- cpe:2.3:o:microsoft:windows_7:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_xp:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2009-3294
- 2026-10-03 Alias added: GHSA-8qvm-3v5h-74qx
References
Exploit 1
Patch 2
Advisory 5
More Php vulnerabilities
- TI-2024-04260 Argument Injection in PHP-CGI KEVCVSS 3.1CRITICAL 9.8
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2012-01607 sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI… KEVCVSS 3.1CRITICAL 9.8
- TI-2026-78794 PHP remote code execution via stale global state KEVCVSS 4.0CRITICAL 9.2
- TI-2026-78793 Out-of-memory handling flaw in PHP allows remote code execution KEVCVSS 4.0CRITICAL 9.2
- TI-2015-00205 Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and… CVSS 2.0HIGH 10.0
Sources
- CVE-2009-3294 · CVE Program
- CVE-2009-3294 · NVD
- FIRST EPSS
- GHSA-8qvm-3v5h-74qx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences