CVE-2025-34071

Public Exploit
GFI Kerio Control Unsigned System Image Upload Root Code Execution

Description

A remote code execution vulnerability in GFI Kerio Control 9.4.5 allows attackers with administrative access to upload and execute arbitrary code through the firmware upgrade feature. The system upgrade mechanism accepts unsigned .img files, which can be modified to include malicious scripts within the upgrade.sh or disk image components. These modified upgrade images are not validated for authenticity or integrity, and are executed by the system post-upload, enabling root access.

Category

9.4
CVSS
Severity: Critical
CVSS 4.0 •
EPSS 0.28%
Third-Party Advisory ssd-disclosure.com Third-Party Advisory vulncheck.com
Affected: GFI Software Kerio Control
Published at:
Updated at:

References

Link Tags
https://ssd-disclosure.com/ssd-advisory-kerio-control-authentication-bypass-and-rce/ technical description third party advisory exploit
https://vulncheck.com/advisories/gfi-kerio-control-auth-bypass-rce third party advisory

Frequently Asked Questions

What is the severity of CVE-2025-34071?
CVE-2025-34071 has been scored as a critical severity vulnerability.
How to fix CVE-2025-34071?
To fix CVE-2025-34071, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-34071 being actively exploited in the wild?
It is possible that CVE-2025-34071 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-34071?
CVE-2025-34071 affects GFI Software Kerio Control.
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