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.
Conclusion & alert: CVE-2025-2747 is rated Critical Active Threat (99.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 91.41%, 100th percentile). Core evidence: CISA KEV confirms active exploitation (added 2025-10-20) affecting Kentico / Xperience CMS. a weakness (CWE-288) Unauthenticated remote administrative access may be possible. Mandatory action: The CISA remediation deadline has passed—treat as an emergency patch priority.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
: Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel Vulnerability · CISA KEV detail
: 2025-10-20
: 2025-11-10
: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-04 | 90.94% | 91.41% | +0.48% |
| 2 | 2026-05-17 | 91.26% | 90.94% | -0.32% |
| 3 | 2026-05-02 | — | 91.26% | — |
Full EPSS history (29 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| URL | Tags |
|---|---|
| https://devnet.kentico.com/download/hotfixes | Patch |
| https://github.com/watchtowrlabs/kentico-xperience13-AuthBypass-wt-2025-0011 | Third Party Advisory |
| https://labs.watchtowr.com/bypassing-authentication-like-its-the-90s-pre-auth-rce-chain-s-in-kentico-xperience-cms/ | Exploit Third Party Advisory |
| https://www.vulncheck.com/advisories/kentico-xperience-staging-sync-server-none-password-type-authentication-bypass | Third Party Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-2747 | US Government Resource |