The escapeshellarg function in ext/standard/exec.c in PHP before 5.4.42, 5.5.x before…
Priority MEDIUM 51CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-78.
Summary
The escapeshellarg function in ext/standard/exec.c in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 on Windows allows remote attackers to execute arbitrary OS commands via a crafted string to an application that accepts command-line arguments for a call to the PHP system function.
Why it matters now
EPSS 0.05999 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
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 · 38
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | up to 5.4.41 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:* | 5.5.0 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:* | 5.5.1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:* | 5.5.2 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:* | 5.5.3 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:* | 5.5.4 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:* | 5.5.5 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:* | 5.5.6 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:* | 5.5.7 | Vulnerable | PHP |
- cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:* Versions up to 5.4.41 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:* Versions 5.5.0 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:* Versions 5.5.1 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:* Versions 5.5.2 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:* Versions 5.5.3 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:* Versions 5.5.4 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:* Versions 5.5.5 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:* Versions 5.5.6 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:* Versions 5.5.7 Vulnerable ·PHP
Show 28 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:* | 5.5.8 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:* | 5.5.9 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:* | 5.5.10 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:* | 5.5.11 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:* | 5.5.12 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:* | 5.5.13 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:* | 5.5.14 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.15:*:*:*:*:*:*:* | 5.5.15 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.16:*:*:*:*:*:*:* | 5.5.16 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.17:*:*:*:*:*:*:* | 5.5.17 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:* | 5.5.18 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:* | 5.5.19 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:* | 5.5.20 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:* | 5.5.21 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:* | 5.5.22 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:* | 5.5.23 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.24:*:*:*:*:*:*:* | 5.5.24 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.5.25:*:*:*:*:*:*:* | 5.5.25 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:* | 5.6.0 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* | 5.6.1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* | 5.6.2 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* | 5.6.3 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* | 5.6.4 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* | 5.6.5 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* | 5.6.6 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* | 5.6.7 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* | 5.6.8 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* | 5.6.9 | Vulnerable | PHP |
- cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:* Versions 5.5.8 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:* Versions 5.5.9 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:* Versions 5.5.10 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:* Versions 5.5.11 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:* Versions 5.5.12 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:* Versions 5.5.13 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:* Versions 5.5.14 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.15:*:*:*:*:*:*:* Versions 5.5.15 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.16:*:*:*:*:*:*:* Versions 5.5.16 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.17:*:*:*:*:*:*:* Versions 5.5.17 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:* Versions 5.5.18 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:* Versions 5.5.19 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:* Versions 5.5.20 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:* Versions 5.5.21 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:* Versions 5.5.22 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:* Versions 5.5.23 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.24:*:*:*:*:*:*:* Versions 5.5.24 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.5.25:*:*:*:*:*:*:* Versions 5.5.25 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:* Versions 5.6.0 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* Versions 5.6.1 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* Versions 5.6.2 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* Versions 5.6.3 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* Versions 5.6.4 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* Versions 5.6.5 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* Versions 5.6.6 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* Versions 5.6.7 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* Versions 5.6.8 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* Versions 5.6.9 Vulnerable ·PHP
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2015-4642
- 2026-10-03 Alias added: GHSA-2g3c-3p8m-g2p4
References
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-2015-4642 · CVE Program
- CVE-2015-4642 · NVD
- FIRST EPSS
- GHSA-2g3c-3p8m-g2p4 · 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