# CVE-2025-2747: Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel Vulnerability

- Exploited (CISA KEV): yes, added 2025-10-20
- Published: 2025-03-24
- CVSS: 9.8 CRITICAL (v3.1)
- EPSS: 97.2% (100th percentile)
- CWE: CWE-288

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Blocks by default | 2025-08-11 | 140 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2026-01-20 | 302 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Cloudflare

- 2025-08-11 · new · rule 7dc07014cefa4ce9adf21da7b79037e6 · default Block
  > Kentico Xperience CMS - Auth Bypass - CVE:CVE-2025-2747. Previous action: Log. New action: Block. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-08-11-waf-release/

### F5

- 2026-01-20 · new · rule 200013149
  > Added: signature 200013149 "Kentico Xperience Staging Service Authentication Bypass" (Authentication/Authorization Attacks, risk High), systems: ASP.NET. References: CVE-2025-2747.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: passed (0 of 1 requests blocked), template CVE-2025-2747, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 1 requests blocked), template CVE-2025-2747, 2026-11-02

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2025-2747 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2025-2747