Kentico Xperience up to 13.0.178 Sync Server improper authentication

Summaryinfo

A vulnerability classified as critical was found in Kentico Xperience up to 13.0.178. This affects an unknown part of the component Sync Server. Executing a manipulation can lead to improper authentication. The identification of this vulnerability is CVE-2025-2747. The attack may be launched remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability has been found in Kentico Xperience up to 13.0.178 and classified as very critical. This vulnerability affects an unknown function of the component Sync Server. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An authentication bypass vulnerability in Kentico Xperience allows authentication bypass via the Staging Sync Server component password handling for the server defined None type. Authentication bypass allows an attacker to control administrative objects.This issue affects Xperience through 13.0.178.

The weakness was shared by Piotr Bazydlo. The advisory is available at labs.watchtowr.com. This vulnerability was named CVE-2025-2747 since 03/24/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but an exploit is available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/24/2025).

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 271229 (Kentico Xperience < 13.0.178 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. This issue was added on 10/20/2025 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 11/10/2025:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (271229) and EUVD (EUVD-2025-8009). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Kentico

Name

• Xperience

Version

• 13.0.178

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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