CVE-2024-4577

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2024-06-12. Federal remediation due 2024-07-03. Known ransomware campaign use: reported by CISA.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

99.98% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 99.9% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Critical. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2024-06-09 19:42Z2 YR AGO

Last updated

2025-10-21 23:05Z1 YR AGO

Reserved

2024-05-06

Assigning CNA

php

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.1

Document digest

71d05fd062120d3b44b5c9d6bd2f928ec1695b3307d58128c90c9c814bb0b628

• github.comhttps://github.com/php/php-src/security/advisories/GHSA-3qgc-jrrr-25jv
• blog.orange.twhttps://blog.orange.tw/2024/06/cve-2024-4577-yet-another-php-rce.html
• devco.rehttps://devco.re/blog/2024/06/06/security-alert-cve-2024-4577-php-cgi-argument-injection-vulnerability-en/
• arstechnica.comhttps://arstechnica.com/security/2024/06/php-vulnerability-allows-attackers-to-run-malicious-code-on-windows-servers/
• www.imperva.comhttps://www.imperva.com/blog/imperva-protects-against-critical-php-vulnerability-cve-2024-4577/
• github.comhttps://github.com/11whoami99/CVE-2024-4577
• github.comhttps://github.com/xcanwin/CVE-2024-4577-PHP-RCE
• github.comhttps://github.com/rapid7/metasploit-framework/pull/19247
• labs.watchtowr.comhttps://labs.watchtowr.com/no-way-php-strikes-again-cve-2024-4577/
• github.comhttps://github.com/watchtowrlabs/CVE-2024-4577
• www.php.nethttps://www.php.net/ChangeLog-8.php#8.1.29
• www.php.nethttps://www.php.net/ChangeLog-8.php#8.2.20
• www.php.nethttps://www.php.net/ChangeLog-8.php#8.3.8
• cert.behttps://cert.be/en/advisory/warning-php-remote-code-execution-patch-immediately
• isc.sans.eduhttps://isc.sans.edu/diary/30994
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2024/06/07/1
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PKGTQUOA2NTZ3RXN22CSAUJPIRUYRB4B/
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W45DBOH56NQDRTOM2DN2LNA2FZIMC3PK/
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20240621-0008/
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4577government-resource
• www.vicarius.iohttps://www.vicarius.io/vsociety/posts/php-cgi-os-command-injection-vulnerability-cve-2024-4577
• www.vicarius.iohttps://www.vicarius.io/vsociety/posts/php-cgi-argument-injection-to-rce-cve-2024-4577
• blog.talosintelligence.comhttps://blog.talosintelligence.com/new-persistent-attacks-japan/