CVE-2024-4040: CrushFTP VFS Sandbox Escape Vulnerability

CISA Known Exploited Vulnerabilities

Name

CrushFTP VFS Sandbox Escape Vulnerability

Vendor

CrushFTP

Product

CrushFTP

Added to the catalog

2024-04-24

Due date for US federal agencies

2024-05-01

Weaknesses

CWE-1336

Catalog version

2026.10.30

CrushFTP contains an unspecified sandbox escape vulnerability that allows a remote attacker to escape the CrushFTP virtual file system (VFS).

Required action (CISA)

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

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update&version=34
• https://nvd.nist.gov/vuln/detail/CVE-2024-4040

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2024-04-22T20:15:07.803

Last modified

2026-06-17T08:00:59.913

Weaknesses

CWE-1336, CWE-94

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.

References

• https://github.com/airbus-cert/CVE-2024-4040 (Exploit, 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=Update (Patch, Vendor Advisory)
• https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update (Patch, 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-2024-4040 (Exploit, 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=Update (Patch, Vendor Advisory)
• https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update (Patch, 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-2024-4040 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:15.686Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2024-4040

CVE record

Title (CNA)

Unauthenticated arbitrary file read and remote code execution in CrushFTP

Assigner

directcyber

State

PUBLISHED

Published

2024-04-22T19:21:46.408Z

Updated

2025-10-21T23:05:20.925Z

Problem types

CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine

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.

References

• https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update
• https://www.crushftp.com/crush10wiki/Wiki.jsp?page=Update
• https://www.reddit.com/r/cybersecurity/comments/1c850i2/all_versions_of_crush_ftp_are_vulnerable/
• https://www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately/
• https://www.reddit.com/r/crowdstrike/comments/1c88788/situational_awareness_20240419_crushftp_virtual/
• https://www.rapid7.com/blog/post/2024/04/23/etr-unauthenticated-crushftp-zero-day-enables-complete-server-compromise/
• https://github.com/airbus-cert/CVE-2024-4040

Read on 2026-11-03T02:06:56.102Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2024/4xxx/CVE-2024-4040.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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