# CVE-2019-10068: Kentico Xperience Deserialization of Untrusted Data Vulnerability

- Exploited (CISA KEV): yes, added 2022-03-25
- Published: 2019-03-26
- CVSS: 9.8 CRITICAL (v3.1)
- EPSS: 95.1% (100th percentile)
- CWE: CWE-502

An issue was discovered in Kentico 12.0.x before 12.0.15, 11.0.x before 11.0.48, 10.0.x before 10.0.52, and 9.x versions. Due to a failure to validate security headers, it was possible for a specially crafted request to the staging service to bypass the initial authentication and proceed to deserialize user-controlled .NET object input. This deserialization then led to unauthenticated remote code execution on the server where the Kentico instance was hosted.

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

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | Before feed history | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2024-05-21 | — |
| Akamai | No public source | — | — |
| OWASP CRS | Before feed history | — | — |

### F5

- 2024-05-21 · updated · rule 200004761
  > Updated: signature 200004761 "Kentico CMS Staging Service Unsafe Deserialization" (Server Side Code Injection, risk High), systems: Microsoft Windows, ASP.NET, Other Web Server. References: CVE-2019-10068.
  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: blocked (1 of 1 requests blocked), template CVE-2019-10068, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: blocked (1 of 1 requests blocked), template CVE-2019-10068, 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-2019-10068 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2019-10068