Is CVE-2025-2747 (Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel) being exploited in the wild?

What “exploited in the wild” means for this CVE

For a vulnerability question like this, the key issue is not whether a proof-of-concept exists, but whether defenders should treat the flaw as actively abused. CISA’s KEV catalogue is the operational signal that matters most here, because it is reserved for vulnerabilities with reliable evidence of exploitation, not just theoretical risk. For verification and prioritisation, use the CISA Known Exploited Vulnerabilities Catalog alongside the vendor advisory.

That makes the practical answer straightforward: this is a live response problem, not a watchlist item. If your environment runs Kentico Xperience CMS, the question is whether any exposed instance still allows the alternate-path or alternate-channel authentication bypass to be exercised before you have contained exposure or applied the vendor fix.

How to confirm exposure and reduce the attack surface

Start by identifying every internet-facing and partner-facing Kentico Xperience CMS instance, then confirm whether any of them are running the vulnerable code path that an attacker could reach without normal authentication. The most important operational step is to close unauthorised routes into administrative functionality, because bypass flaws matter when they can reach high-value objects or privileged workflows.

Use the vendor’s guidance to determine exactly which deployments are affected and whether compensating controls can block the vulnerable path. If you need a broader reference for triage discipline, the Zero-Day and Exploited Vulnerabilities Guide covers KEV-style prioritisation, emergency mitigation and post-patch hunting in a way that maps directly to an exploited CMS flaw.

Where patching is delayed, segment the CMS, restrict administrative interfaces to trusted networks, and tighten monitoring around any alternate routes, reverse proxies, and application gateways that could preserve a bypass path. Administrative objects are the prize here, so the control objective is to make unauthenticated reachability materially harder while you work the fix.

What to check for after suspected exposure

Because this flaw can let an attacker control administrative objects, post-exploitation checks should focus on changes that affect administrative access, content integrity, and downstream trust. Look for new or modified admin users, role changes, unexpected workflow or publishing changes, altered integrations, and any sign that the CMS was used to stage further access into connected systems.

Review authentication, request, and application logs for access to unusual paths or channels immediately before suspicious administrative actions. If you already see evidence of unauthorised admin activity, preserve logs and configuration snapshots before making changes, because the timing and sequence of access attempts often matter more than the exploit string itself. For a related operational pattern, CitrixBleed 2 2025 shows how exploited edge flaws can turn into session abuse and privileged access loss.

Risk and Threat Considerations

An authentication bypass in a CMS is risky because it can convert a public application weakness into privileged administrative control, content tampering, or a foothold for broader compromise. Once attackers can act as administrators, they may change configuration, create persistence, or use the CMS as a launch point into connected business systems.

Failure mechanism: The vulnerable alternate path or channel lets a request avoid the intended authentication decision, so the attacker reaches administrative functions without proving identity in the normal way.

Impact: An attacker may gain control over administrative objects, alter site content or settings, plant persistence, or use the CMS trust relationship to expand access elsewhere.

Practitioner Guidance

What to prioritise: Treat any exposed Kentico Xperience instance as urgent until you have confirmed the vendor fix status, blocked reachable bypass paths, and reviewed administrative activity since the exposure window began. KEV inclusion means the priority is exposure reduction first, not extended debate about exploit maturity.

What to verify: Confirm whether administrative accounts, roles, connectors, or publishing workflows changed unexpectedly, and whether the application shows requests to unusual or undocumented access paths. If the system touches customer-facing content or downstream integrations, assume the blast radius may extend beyond the CMS itself.

Practitioner takeaway: For KEV-listed CMS flaws, the right question is not whether exploitation is possible, but whether you have already removed the reachable path and checked for administrative misuse before the attacker does more than login bypass.

Related resources from NHI Mgmt Group

• CVE-2025-2747 (Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel)
• CVE-2025-2746 (Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel)
• Is CVE-2026-20079 (Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel) being exploited in the wild?
• How do you patch or mitigate CVE-2026-20079 (Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel)?