Historical catalog analysis: CISA added this entry on October 20, 2025. The entry reflects catalog information retrieved on August 31, 2026, not a snapshot archived on the inclusion date. Check current vendor guidance before acting.
What the vulnerability is
CVE-2025-2746 is an authentication bypass vulnerability (CWE-288) affecting Kentico Xperience CMS. The flaw involves the use of an alternate path or channel to circumvent standard authentication mechanisms. If successfully exploited, this could allow an attacker to gain control over administrative objects within the system.
Exposure and applicability
This vulnerability applies to organizations deploying Kentico Xperience CMS. Because the bypass utilizes an alternate path or channel, exposure exists where the CMS is accessible via network paths that may not be subject to the same authentication rigors as the primary administrative interface.
For U.S. federal agencies, this vulnerability has been added to the CISA Known Exploited Vulnerabilities (KEV) catalog with a remediation deadline of November 10, 2025, per BOD 22-01 guidance.
Remediation priorities
Our analysis suggests prioritizing the following actions based on the available vendor data:
- Apply Vendor Hotfixes: The primary corrective action is to implement mitigations provided by the vendor via their official hotfix portal. This should be the immediate priority for all affected instances.
- Inventory CMS Deployments: Identify all active instances of Kentico Xperience CMS across the environment to ensure no shadow or legacy installations remain unpatched.
- Evaluate Product Viability: In scenarios where mitigations cannot be applied or are unavailable, organizations should evaluate whether to discontinue use of the product to eliminate the exposure path.
How to validate remediation
Verification must go beyond a simple version check, as a deployed patch does not always guarantee that the specific alternate path used for the bypass has been closed in the local environment.
Defenders should verify mitigation by attempting to access administrative objects through the identified alternate channels using an unauthenticated session. A successful remediation is evidenced when these paths consistently return authentication failures or are blocked, rather than granting administrative access. Validation should be performed in a staging environment that mirrors production configurations before confirming the result on live assets.
Limits and open questions
While the vulnerability allows for administrative control, the source does not specify which exact administrative objects are targeted or the full extent of the post-bypass capabilities. Additionally, while listed in the KEV catalog, it remains unknown if this vulnerability is currently being leveraged by ransomware campaigns. There is a residual risk that existing compromised accounts or persistence mechanisms established prior to patching may remain active even after the authentication bypass is closed.
Source and editorial note
CVE-2025-2746: Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel Vulnerability · Source date: October 20, 2025 · Retrieved August 31, 2026.
Material facts are tied to the cited primary source. Recommendations are independent defensive analysis unless attributed to the source. Confirm consequential decisions against current authoritative guidance.
Archive date: October 23, 2025. The displayed post date is assigned three days after the source date to organize this retrospective archive; it does not mean this site published the analysis then. First published by this site: September 30, 2026 at 00:45 UTC.
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