CVE-2024-4040

Name: CVE-2024-4040
Creator: NVD / NIST
Published: 2024-04-22T20:15:07.803+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 10/10Actively ExploitedEPSS 99.54%

Last modified Jun 17, 2026

CVE-2024-4040 is a critical-severity vulnerability rated 10/10 on the CVSS scale. A server side template injection vulnerability in CrushFTP in all versions before 10.7.1 and 11.1.0 on all platforms allows unauthenticated remote attackers to read files from the filesystem outside of the VFS Sandbox, bypass authentication to gain administrative access, and perform remote code execution on the server.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.54% chance of exploitation in the next 30 days.

Description

A server side template injection vulnerability in CrushFTP in all versions before 10.7.1 and 11.1.0 on all platforms allows unauthenticated remote attackers to read files from the filesystem outside of the VFS Sandbox, bypass authentication to gain administrative access, and perform remote code execution on the server.

Metrics

CVSS 3.1

10/10

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

EPSS Probability

99.54%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by May 1, 2024.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Crushftp	Crushftp	>= 10.0.0, < 10.7.1
Crushftp	Crushftp	>= 11.0.0, < 11.1.0

References

https://github.com/airbus-cert/CVE-2024-4040Exploit, Third Party Advisory
https://www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately/Press/Media Coverage, Third Party Advisory
https://www.crushftp.com/crush10wiki/Wiki.jsp?page=UpdatePatch, Vendor Advisory
https://www.crushftp.com/crush11wiki/Wiki.jsp?page=UpdatePatch, Vendor Advisory
https://www.rapid7.com/blog/post/2024/04/23/etr-unauthenticated-crushftp-zero-day-enables-complete-server-compromise/Third Party Advisory
https://www.reddit.com/r/crowdstrike/comments/1c88788/situational_awareness_20240419_crushftp_virtual/Exploit, Issue Tracking
https://www.reddit.com/r/cybersecurity/comments/1c850i2/all_versions_of_crush_ftp_are_vulnerable/Issue Tracking, Patch
https://github.com/airbus-cert/CVE-2024-4040Exploit, Third Party Advisory
https://www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately/Press/Media Coverage, Third Party Advisory
https://www.crushftp.com/crush10wiki/Wiki.jsp?page=UpdatePatch, Vendor Advisory
https://www.crushftp.com/crush11wiki/Wiki.jsp?page=UpdatePatch, Vendor Advisory
https://www.rapid7.com/blog/post/2024/04/23/etr-unauthenticated-crushftp-zero-day-enables-complete-server-compromise/Third Party Advisory
https://www.reddit.com/r/crowdstrike/comments/1c88788/situational_awareness_20240419_crushftp_virtual/Exploit, Issue Tracking
https://www.reddit.com/r/cybersecurity/comments/1c850i2/all_versions_of_crush_ftp_are_vulnerable/Issue Tracking, Patch
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4040US Government Resource

Timeline

Published: Apr 22, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-4040?

How severe is CVE-2024-4040?

CVE-2024-4040 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 99.54% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2024-4040?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST