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Intelligence for Africa and the Gulf

AEGLIX vulnerability intelligence

CVE-2024-4577

CRITICAL · CVSS 9.8 · Analyzed

Published: 2024-06-09 · Updated: 2026-06-17 · Source: NVD

Stored catalog record

Source record retrieved 2026-10-28T14:19:25.288297+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.

Vulnerability overview

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.

Patch review priority

Known exploitation: prioritize review

  • CISA KEV lists real-world exploitation.

FIRST EPSS: 99.99% · percentile 100.0 · score date 2026-10-27.

EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗

Severity and scoring

CVSS score
9.8 · CRITICAL
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-78

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Listed in CISA’s Known Exploited Vulnerabilities catalog.

Affected product
PHP Group · PHP
Added to catalog
2024-06-12
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA remediation due date
2024-07-03

CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

    From (inclusive): 8.1.0

    Before (exclusive): 8.1.29

  • cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

    From (inclusive): 8.2.0

    Before (exclusive): 8.2.20

  • cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

    From (inclusive): 8.3.0

    Before (exclusive): 8.3.8

  • cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

  • cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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