CrushFTP: CrushFTP authentication bypass (CVE-2025-2825) #shorts

Summary

In today's episode, we dive into the details of a recently discovered vulnerability, CVE-2025-2825, affecting CrushFTP software. This critical flaw has been actively exploited in the wild, compromising the security of numerous systems. We aim to break down the technical aspects, identify who's at risk, and discuss the necessary steps for mitigation.

Product details

CrushFTP is a robust file transfer solution used widely for its ability to facilitate secure file transfers. The software is particularly popular among enterprises for its features such as encrypted file transfers and high performance. The versions affected by CVE-2025-2825 include 10.0.0 through 10.8.3 and 11.0.0 through 11.3.0.

Vulnerability type summary

Designated as CWE-287, this vulnerability refers to Improper Authentication, meaning the software incorrectly implements authentication mechanisms. As a result, unauthorized users may be able to access secure functions or data. This security flaw is critical as it allows attackers to bypass authentication controls in CrushFTP's authorization header processing.

Details of the vulnerability

CVE-2025-2825 affects the HTTP Request Handler component of CrushFTP. It allows remote attackers to perform authentication bypass using public PoC exploit code. By sending specially crafted HTTP requests with known usernames, attackers can impersonate users, perform administrative actions, and retrieve sensitive data. This vulnerability is compounded by its ease of exploitation, as demonstrated by its rapid adoption in malicious campaigns.

Conclusion

CrushFTP users are strongly advised to update their software to the latest version, which includes crucial patches to mitigate this vulnerability. With active exploitation in the wild, taking prompt action is critical to secure sensitive data and prevent unauthorized access. As we continue to follow this issue, stay tuned for updates and new developments around CVE-2025-2825.

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This following systems are involved

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