PHP-CGI Argument Injection (CVE-2024-4577) for 2026-09-03

Sep 03, 2026 Exploitation

Last Updated: 00:00 UTC

CVE-2024-4577 lets an attacker pass command-line options to PHP-CGI on Windows by using a soft hyphen (%AD) that Windows best-fit mapping turns into a dash. Requests set allow_url_include and auto_prepend_file=php://input so the POST body runs as PHP. The RedTail cryptomining botnet (User-Agent libredtail-http) sprays this against every host it finds.

CVE References

CVE-2024-4577

MITRE ATT&CK

Tactic: Initial Access (TA0001)
Technique: T1190 — Exploit Public-Facing Application

Observed URIs

Attackers by Country

Hong Kong: 2Japan: 1Germany: 1France: 1Singapore: 1
Hong Kong233.3%
Japan116.7%
Germany116.7%
France116.7%
Singapore116.7%

IP Address : ASN : City/Provider

  • 101.36.104.242 : AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED : Tokyo

  • 118.193.35.3 : AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED : Hong Kong

  • 159.89.24.222 : AS14061 DigitalOcean, LLC : Frankfurt am Main

  • 165.154.64.224 : AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED : Hong Kong

  • 169.58.153.7 : AS51167 Contabo GmbH : Lauterbourg

  • 47.237.140.87 : AS45102 Alibaba (US) Technology Co., Ltd. : Singapore

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