PHP-CGI Argument Injection (CVE-2024-4577) for 2026-08-11

Aug 11, 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

Switzerland: 1South Korea: 1The Netherlands: 1United States: 1Russia: 1China: 1
Switzerland116.7%
South Korea116.7%
The Netherlands116.7%
United States116.7%
Russia116.7%
China116.7%

IP Address : ASN : City/Provider

  • 209.99.187.10 : AS402253 SKN Subnet & Telecom Ltd : Zurich

  • 218.236.255.132 : AS9318 SK Broadband Co Ltd : Goyang-si

  • 31.76.9.4 : AS215439 Play2go International Limited : Amsterdam

  • 47.77.182.54 : AS45102 Alibaba (US) Technology Co., Ltd. : United States

  • 80.87.206.6 : AS16276 OVH SAS : Russia

  • 81.70.236.56 : AS45090 Shenzhen Tencent Computer Systems Company Limited : Beijing

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