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

Sep 09, 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

France: 1Germany: 1
France150.0%
Germany150.0%

IP Address : ASN : City/Provider

  • 141.11.5.18 : AS215114 Stevan Durand–L’Hours t/a SLBCLOUD : Paris

  • 91.107.159.237 : AS24940 Hetzner Online GmbH : Nuremberg

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