Detections
Analytics
CVE-2024-4577
critical
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.
From the Tenable Blog
CVE-2024-4577: Proof of Concept Available for PHP-CGI Argument Injection Vulnerability
Published: 2024-06-07
Researchers disclose a critical severity vulnerability affecting PHP installations and provide proof-of-concept exploit code, which could lead to remote code execution.
References
https://blog.orange.tw/2024/06/cve-2024-4577-yet-another-php-rce.html
https://www.imperva.com/blog/imperva-protects-against-critical-php-vulnerability-cve-2024-4577/
https://security.netapp.com/advisory/ntap-20240621-0008/
https://cert.be/en/advisory/warning-php-remote-code-execution-patch-immediately
https://thehackernews.com/2025/03/hackers-exploit-severe-php-flaw-to.html
https://blog.talosintelligence.com/patch-it-up-old-vulnerabilities-are-everyones-problems/
https://thehackernews.com/2025/03/cisa-adds-five-actively-exploited.html
https://www.greynoise.io/blog/mass-exploitation-critical-php-cgi-vulnerability-cve-2024-457
https://therecord.media/bug-affecting-php-scripts-global-issue
https://thehackernews.com/2025/03/php-cgi-rce-flaw-exploited-in-attacks.html
https://blog.talosintelligence.com/new-persistent-attacks-japan/
https://devco.re/blog/2025/01/09/worstfit-unveiling-hidden-transformers-in-windows-ansi/
https://blog.orange.tw/posts/2025-01-worstfit-unveiling-hidden-transformers-in-windows-ansi/
https://thehackernews.com/2025/01/mirai-botnet-variant-exploits-four.html
https://hackread.com/androxgh0st-botnet-iot-devices-exploit-vulnerabilities/
https://securelist.com/exploits-and-vulnerabilities-q3-2024/114839/
https://securelist.com/vulnerability-exploit-report-q2-2024/113455/
https://thehackernews.com/2024/08/hackers-exploit-php-vulnerability-to.html
https://symantec-enterprise-blogs.security.com/threat-intelligence/taiwan-malware-dns
https://www.akamai.com/blog/security-research/2024-php-exploit-cve-one-day-after-disclosure
https://www.php.net/ChangeLog-8.php#8.3.8
https://www.php.net/ChangeLog-8.php#8.2.20
https://www.php.net/ChangeLog-8.php#8.1.29
https://labs.watchtowr.com/no-way-php-strikes-again-cve-2024-4577/
https://isc.sans.edu/diary/30994
https://github.com/xcanwin/CVE-2024-4577-PHP-RCE
https://github.com/watchtowrlabs/CVE-2024-4577
https://github.com/rapid7/metasploit-framework/pull/19247
https://github.com/php/php-src/security/advisories/GHSA-3qgc-jrrr-25jv
Details
Published: 2024-06-09
Updated: 2025-03-28
Named Vulnerability: WorstFitKnown Exploited Vulnerability (KEV)
Risk Information
CVSS v2
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
CVSS v3
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS
EPSS: 0.94376
Vulnerability Watch
Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.
Vulnerability of Interest