CVE-2025-2746: Kentico Xperience authentication bypass in Staging Sync Server

CVE-2025-2746 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2025-10-20

Kentico Xperience is a content management system (CMS) used to build and manage websites. A critical security flaw allows unauthorized individuals to bypass login requirements and gain administrative control over the system. This could lead to the theft of sensitive data, website defacement, or a total shutdown of the service. This vulnerability is reportedly being exploited in the wild.

Technologies: Kentico Xperience. Vendors: Kentico.

Quick answers

Is CVE-2025-2746 exploited in the wild?
Yes. CVE-2025-2746 is known to be exploited in the wild, first recorded on 20 October 2025. Treat it as urgent.
How severe is CVE-2025-2746?
Critical severity, with a CVSS score of 9.8, published 20 October 2025.
Which products and versions are affected?
Kentico Xperience Up to and including 13.0.172.
Is there a fix for CVE-2025-2746?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-2746 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2025-2746?
Check whether you run Kentico Xperience or Kentico Xperience CMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An authentication bypass vulnerability (CWE-288) exists in Kentico Xperience through version 13.0.172. The flaw is located within the Staging Sync Server's digest authentication mechanism, specifically in how it handles empty SHA1 usernames. A remote, unauthenticated attacker can exploit this logic error to bypass authentication requirements. Successful exploitation allows the attacker to control administrative objects, potentially leading to full system compromise. Hotfixes are available from the vendor's developer portal.

Affected products

  • Kentico Xperience Up to and including 13.0.172

Timeline

  • 2025-03-24: disclosed: Initial NVD publication date
  • 2025-10-20: kev added: Added to CISA Known Exploited Vulnerabilities catalog
  • 2025-10-20: advisory: CISA advisory published

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