Kentico Xperience Path Traversal (CVE-2025-2749)

Historical catalog analysis: CISA added this entry on April 20, 2026. 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-2025-2749 is a path traversal vulnerability (CWE-22, CWE-434) identified in Kentico Xperience. The flaw exists within the Staging Sync Server component and could allow an authenticated user to upload arbitrary data to locations relative to the intended path.

Exposure and applicability

This vulnerability specifically affects deployments of Kentico Xperience that utilize the Staging Sync Server. Because the exploit requires authentication, exposure is limited to users with valid credentials who have access to this specific component. Organizations should identify all instances where the Staging Sync Server is deployed to determine their total attack surface.

Remediation priorities

Based on our analysis, vulnerability management teams should prioritize remediation based on the level of access granted to authenticated users within the environment.

1. Apply Vendor Hotfixes: The primary corrective action is the application of hotfixes provided by the vendor via their official download portal. This should be the first priority for all affected systems.
2. Review Authentication Privileges: Since this vulnerability requires an authenticated user, auditing who has access to the Staging Sync Server could reduce the likelihood of exploitation while patches are being deployed.
3. Network Segmentation: Restricting network access to the Staging Sync Server to only known, trusted administrative IPs may limit the exposure path for potential attackers.

How to validate remediation

To ensure that the risk has been reduced, defenders should move beyond simple version checks. We recommend the following validation steps:

• Hotfix Verification: Confirm through installation logs or vendor-provided checksums that the specific hotfix addressing CVE-2025-2749 was successfully applied to the Staging Sync Server.
• Configuration Audit: Verify that the file system permissions surrounding the Staging Sync Server are configured according to the principle of least privilege, ensuring the application cannot write to sensitive system directories regardless of the software version.

Limits and open questions

It remains unknown whether this vulnerability has been leveraged by ransomware campaigns. Additionally, while hotfixes address the path traversal flaw, they do not eliminate the residual risk associated with compromised authenticated accounts. Organizations must continue to manage credential security independently of this patch.

Source and editorial note

CVE-2025-2749: Kentico Xperience Path Traversal Vulnerability · Source date: April 20, 2026 · 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: April 23, 2026. 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 14, 2026 at 00:10 UTC.

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