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://thehackernews.com/2026/08/evooo1bot-linux-botnet-exploits-known.html
https://www.greynoise.io/blog/php-cryptomining-campaign
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://github.com/khwajasaad267-coder/cve-2024-4577-lab
https://github.com/chengbochuan3/CVE-Web-Framework
https://github.com/DuyDuongDuyDuong/CVE-2024-4577-Exploitation-AsyncRAT-Deployment-DFIR-Investigatio
https://github.com/high-tech-r/quiet-cve
https://github.com/NKTriS/HTSOC
https://github.com/razureink/cve-2024-4577-phpcgi_rce_reproduction
https://github.com/Kanak-CypherX/cve-2024-4577-lab
https://github.com/Alpastx/CTFs
https://github.com/ykrishhh/cve-pocs
https://github.com/YAMRAJ13y/patchpilot
https://github.com/fDarkShadow/noctis
https://github.com/RENE155/cve-analize
https://github.com/SoWiEee/CVE-Research
https://github.com/gl1tch0x1/PHP_8.1.x_Exploit
https://github.com/AbdulMoiz6692/cve-vulnerability-scanner-pro
https://github.com/hermestoola/bb-hunter-pro
https://github.com/RehmanAjaz/CVE-Scanner
https://github.com/ZeroPathAI/zeropath-ctf
https://github.com/mystichackers/CVE-2025
https://github.com/seta-hoangbui/CVE_search
https://github.com/rayngnpc/CVE-2024-4577-rayng
https://github.com/NetHydra/RAW-CVE
https://github.com/carsxndev/php-cgi-argument-injection-detector
https://github.com/a1ex-var1amov/ctf-cve-2024-4577
https://github.com/InfoSec-DB/PHPCGIScanner
https://github.com/Ianthinus/CVE-2024-4577
https://github.com/Skycritch/CVE-2024-4577
https://github.com/r0otk3r/CVE-2024-4577
https://github.com/ibrahmsql/CVE-2024-4577
https://github.com/KimJuhyeong95/cve-2024-4577
https://github.com/tntrock/CVE-2024-4577_PowerShell
https://github.com/PuddinCat/GithubRepoSpider
https://github.com/Gill-Singh-A/CVE-2024-4577-Exploit
https://github.com/Night-have-dreams/php-cgi-Injector
https://github.com/Didarul342/CVE-2024-4577
https://github.com/mr-won/php-cgi-cve-2024-4577
https://github.com/nakataXmodem/cve-rce-poc
https://github.com/BTtea/CVE-2024-4577-RCE-PoC
https://github.com/ahmetramazank/CVE-2024-4577
https://github.com/proExploit1/cve
https://github.com/0xbd2/CVE-2024-4577
https://github.com/longhoangth18/CVE-2024-4577
https://github.com/JeninSutradhar/CVE-2024-4577-checker
https://github.com/ywChen-NTUST/PHP-CGI-RCE-Scanner
https://github.com/bughuntar/CVE-2024-4577
https://github.com/ManuelKy08/CVE-2024-4577---RR
https://github.com/Jcccccx/CVE-2024-4577
https://github.com/codeb0ss/CVEploiterv2
https://github.com/a-roshbaik/CVE-2024-4577-PHP-RCE
https://github.com/waived/CVE-2024-4577-PHP-RCE
https://github.com/ildefonso0/php-7.2.34-CVE-2024
https://github.com/cybersagor/CVE-2024-4577
https://github.com/charis3306/CVE-2024-4577
https://github.com/AlperenY-cs/CVE-2024-4577
https://github.com/olebris/CVE-2024-4577
Details
Published: 2024-06-09
Updated: 2025-11-03
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS
EPSS: 0.99987
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