PHP-CGI Argument Injection (CVE-2024-4577) for 2026-09-18

Sep 18, 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

United States: 2Kazakhstan: 1
United States266.7%
Kazakhstan133.3%

IP Address : ASN : City/Provider

  • 107.150.97.10 : AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED : Los Angeles

  • 20.106.228.98 : AS8075 Microsoft Corporation : Dulles

  • 31.132.90.3 : AS197556 Kar-Tel LLC : Kazakhstan

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