PHP-CGI Argument Injection (CVE-2024-4577) for 2026-09-30

Sep 30, 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: 4Germany: 3Belgium: 2The Netherlands: 2
United States436.4%
Germany327.3%
Belgium218.2%
The Netherlands218.2%

IP Address : ASN : City/Provider

Share on: