PHP-CGI Argument Injection (CVE-2024-4577) for 2026-10-06

Oct 06, 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: 10Belgium: 6Taiwan: 2Germany: 2Japan: 1Indonesia: 1India: 1Singapore: 1Canada: 1Brazil: 1The Netherlands: 1
United States1037.0%
Belgium622.2%
Taiwan27.4%
Germany27.4%
Japan13.7%
Indonesia13.7%
India13.7%
Singapore13.7%
Canada13.7%
Brazil13.7%
The Netherlands13.7%

IP Address : ASN : City/Provider

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