CVE-2025-34071 — CRITICAL (9.8)

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gfi	Kerio Control	9.4.5

Related Weaknesses (CWE)

CWE-306

References

https://ssd-disclosure.com/ssd-advisory-kerio-control-authentication-bypass-and-ExploitThird Party Advisory
https://vulncheck.com/advisories/gfi-kerio-control-auth-bypass-rceThird Party Advisory

FAQ

What is CVE-2025-34071?

CVE-2025-34071 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 upgra...

How severe is CVE-2025-34071?

CVE-2025-34071 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-34071?

Check the references section above for vendor advisories and patch information. Affected products include: Gfi Kerio Control.