CVE-2024-4577
CVSS v3
9.8
CRITICAL
EPSS Score
94.4 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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.
CISA Known Exploited Vulnerability
- Date Added
- 2024-06-12
- Patch Due Date
- 2024-07-03
- Ransomware Use
- Known
Technical details
- Published
- 2024-06-09
- Exploit-DB
- EDB-52331
Frequently asked questions
What is CVE-2024-4577?
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.
Is CVE-2024-4577 actively exploited?
Yes. CVE-2024-4577 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 7/3/2024.
What is the CVSS score for CVE-2024-4577?
CVE-2024-4577 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2024-4577 affecting your environment?
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