CVE-2024-4040
CVE-2024-4040 is a critical-severity vulnerability in Crushftp with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2024-04-24). The underlying weakness is classified as CWE-94.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 100% (100th percentile)
- Actively exploited: Yes — listed in CISA KEV (added 2024-04-24)
- EU (EUVD) id: EUVD-2024-32605
- EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2024-04-24)
- Weakness: CWE-94
- Affected product: Crushftp
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2024-4040?
- 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.
- How severe is CVE-2024-4040?
- CVE-2024-4040 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2024-4040 being actively exploited?
- Yes. CVE-2024-4040 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2024-04-24, which means active exploitation has been confirmed. It should be prioritised for remediation.
- What products are affected by CVE-2024-4040?
- CVE-2024-4040 affects Crushftp. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-4040?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
- Does CVE-2024-4040 have an EU (EUVD) identifier?
- Yes. CVE-2024-4040 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32605. It is also flagged as exploited in the EUVD (since 2024-04-24).
- When was CVE-2024-4040 published?
- CVE-2024-4040 was published on 2024-04-22 and last updated on 2026-06-17.
References
- https://github.com/airbus-cert/CVE-2024-4040
- https://www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately/
- https://www.crushftp.com/crush10wiki/Wiki.jsp?page=Update
- https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update
- https://www.rapid7.com/blog/post/2024/04/23/etr-unauthenticated-crushftp-zero-day-enables-complete-server-compromise/
- https://www.reddit.com/r/crowdstrike/comments/1c88788/situational_awareness_20240419_crushftp_virtual/
- https://www.reddit.com/r/cybersecurity/comments/1c850i2/all_versions_of_crush_ftp_are_vulnerable/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4040
Affected products (1)
- cpe:2.3:a:crushftp:crushftp:*:*:*:*:*:*:*:*
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