PHP-CGI Argument Injection (CVE-2024-4577) for 2026-10-14

Oct 14, 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: 11Japan: 6Canada: 5Singapore: 3China: 2Taiwan: 2Germany: 2Brazil: 2The Netherlands: 1Vietnam: 1Belgium: 1
United States1130.6%
Japan616.7%
Canada513.9%
Singapore38.3%
China25.6%
Taiwan25.6%
Germany25.6%
Brazil25.6%
The Netherlands12.8%
Vietnam12.8%
Belgium12.8%

IP Address : ASN : City/Provider

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