CVE-2024-4040
CriticalExploitedPublic exploitA 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…
Published Apr 22, 2024 · Updated Feb 26, 2026
Key Facts
Patch immediately- CVE-2024-4040 is a critical-severity vulnerability (CVSS 10.0 v3.1) affecting CrushFTP.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 19, 2024 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 100% probability of exploitation in the next 30 days.
- Fixed versions are available, including CrushFTP 10.7.1, CrushFTP 11.1.0.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
10.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
100%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2024-4040 brief as a PDF
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Apr 24, 2024 | May 1, 2024 | Not reported |
| Industry KEV feed | Apr 19, 2024 | May 1, 2024 | Known |
| CIRCL KEV | Apr 24, 2024 | May 1, 2024 | Not reported |
| ENISA EUVD | Apr 24, 2024 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| CrushFTPCrushftp | >= 10.0 | 10.7.1 |
Patched Releases
CrushFTP
10.7.1, 11.1.0
Timeline
Added to Industry KEV feed
Apr 19, 2024
Publicly disclosed
Apr 22, 2024
Added to CISA KEV
Apr 24, 2024
Added to CIRCL KEV
Apr 24, 2024
Added to ENISA EUVD
Apr 24, 2024
Last updated
Feb 26, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
- CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine
References
- advisoryhttps://www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately/
- advisoryVulnCheck exploitation report
- patchhttps://www.crushftp.com/crush10wiki/Wiki.jsp?page=Update
- patchhttps://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update
- patchhttps://www.reddit.com/r/cybersecurity/comments/1c850i2/all_versions_of_crush_ftp_are_vulnerable/
FAQ
Common Questions.
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.
Affected: CrushFTP versions >= 10.0. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 19, 2024 and is known to be used in ransomware campaigns.
Yes. It was added on Apr 24, 2024 with a federal remediation due date of May 1, 2024.
Public exploit code is available.
Fixed versions are available, including CrushFTP 10.7.1, CrushFTP 11.1.0.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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