CVE-2024-4577

CRITICAL9.8

CISA KEV

Published 2024-06-09 · Updated 2026-06-17 · Source security@php.net

Summary

CVE-2024-4577 is a critical-severity (CVSS 9.8) vulnerability in PHP Group PHP. CISA added it to the Known Exploited Vulnerabilities catalog on June 12, 2024, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by July 3, 2024. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly.

All 1 known-exploited PHP Group vulnerabilities →

Description

In PHP versions 8.1.* before 8.1.29, 8.2.* before 8.2.20, 8.3.* before 8.3.8, when using Apache and PHP-CGI on Windows, if the system is set up to use certain code pages, Windows may use "Best-Fit" behavior to replace characters in command line given to Win32 API functions. PHP CGI module may misinterpret those characters as PHP options, which may allow a malicious user to pass options to PHP binary being run, and thus reveal the source code of scripts, run arbitrary PHP code on the server, etc.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-78CWE-78

CISA Known-Exploited Vulnerability

Product: PHP Group — PHP

Name: PHP-CGI OS Command Injection Vulnerability

Date added: 2024-06-12 · Due: 2024-07-03

USED IN RANSOMWARE

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

References

View on NVD

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