CVE-2024-4577 KEV EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 100% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2024-07-03.
Description
In PHP versions 8.1.* before 8.1.29, 8.2.* before 8.2.20, 8.3.* before 8.3.8, when using Apache and PHP-CGI on Windows, if the system is set up to use certain code pages, Windows may use "Best-Fit" behavior to replace characters in command line given to Win32 API functions. PHP CGI module may misinterpret those characters as PHP options, which may allow a malicious user to pass options to PHP binary being run, and thus reveal the source code of scripts, run arbitrary PHP code on the server, etc.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 99.99% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-78 |
| On CISA KEV | yes — remediate by 2024-07-03 |
| Public exploit | yes |
| Published | 2024-06-09 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | PHP-CGI OS Command Injection Vulnerability |
|---|---|
| Added | 2024-06-12 |
| Due | 2024-07-03 |
| Vendor / product | PHP Group / PHP |
| Ransomware use | known |
Affected (3)
| Vendor | Product |
|---|---|
| fedoraproject | fedora |
| microsoft | windows |
| php | php |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | PHP CGI Module 8.3.4 - Remote Code Execution (RCE) | 2025-06-15 |
References
- http://www.openwall.com/lists/oss-security/2024/06/07/1
- https://arstechnica.com/security/2024/06/php-vulnerability-allows-attackers-to-run-malicious-code-on-windows-servers/
- https://blog.orange.tw/2024/06/cve-2024-4577-yet-another-php-rce.html
- https://cert.be/en/advisory/warning-php-remote-code-execution-patch-immediately
- https://devco.re/blog/2024/06/06/security-alert-cve-2024-4577-php-cgi-argument-injection-vulnerability-en/
- https://github.com/11whoami99/CVE-2024-4577
- https://github.com/php/php-src/security/advisories/GHSA-3qgc-jrrr-25jv
- https://github.com/rapid7/metasploit-framework/pull/19247
- https://github.com/watchtowrlabs/CVE-2024-4577
- https://github.com/xcanwin/CVE-2024-4577-PHP-RCE
- https://isc.sans.edu/diary/30994
- https://labs.watchtowr.com/no-way-php-strikes-again-cve-2024-4577/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PKGTQUOA2NTZ3RXN22CSAUJPIRUYRB4B/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W45DBOH56NQDRTOM2DN2LNA2FZIMC3PK/
- https://security.netapp.com/advisory/ntap-20240621-0008/
- https://www.imperva.com/blog/imperva-protects-against-critical-php-vulnerability-cve-2024-4577/
- https://www.php.net/ChangeLog-8.php#8.1.29
- https://www.php.net/ChangeLog-8.php#8.2.20
- https://www.php.net/ChangeLog-8.php#8.3.8
- http://www.openwall.com/lists/oss-security/2024/06/07/1
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