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Patch first › Kentico

Exploited CVE from 2019, added in 2022

CVE-2019-10068

Kentico Xperience · CMS, e-commerce and websites

Kentico Xperience Deserialization of Untrusted Data Vulnerability

At a glance

Exploited. Added to CISA’s catalog of exploited vulnerabilities on March 25, 2022.

Affected product: Kentico Xperience (category CMS, e-commerce and websites, indicative classification). Name in CISA’s catalog: Kentico Xperience.

What should I do?

Apply the security update from Kentico.

Deadline set by CISA for US federal agencies: 21 days (due April 15, 2022). It only binds those agencies, but it is a useful measure of urgency.

Original text of the required action (CISA)

Apply updates per vendor instructions.

Timeline

  1. Vulnerability published Publication date (NVD)
  2. Exploitation confirmed Added to CISA’s KEV catalog
  3. CISA deadline Remediation deadline set for US federal agencies

The facts, with their sources

Exploitation confirmed
Yes, on March 25, 2022 Date added to the catalog of exploited vulnerabilities. Exploitation itself may have started earlier. Source: KEV catalog, collected September 29, 2026 at 14:57 UTC
Ransomware
No known use to date That does not guarantee it is not being used: the information is not public. Source: KEV catalog, collected September 29, 2026 at 14:57 UTC
Hunt for compromise
Not requested by CISA Source: KEV catalog, collected September 29, 2026 at 14:57 UTC
CISA required action
Apply the security update from Kentico. Rewritten by this site from CISA’s original text. Source: KEV catalog, collected September 29, 2026 at 14:57 UTC
CISA deadline
April 15, 2022, 21 days Set for US federal agencies: a measure of urgency, not an obligation elsewhere. Source: KEV catalog, collected September 29, 2026 at 14:57 UTC
Vulnerability published
March 26, 2019 Source: National Vulnerability Database (NVD), collected September 29, 2026 at 15:00 UTC
Product according to CISA
Kentico Xperience Filed by this site under “CMS, e-commerce and websites” (indicative classification). Source: KEV catalog, collected September 29, 2026 at 14:57 UTC
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Technical detail of the score: attack vector, complexity, impact. Source: National Vulnerability Database (NVD), collected September 29, 2026 at 15:00 UTC

Severity and activity

9.8 / 10 CVSS severity: critical

Score from the NVD. Collected Sep 29, 2026.

— Probability of exploitation in the next 30 days (EPSS)

FIRST’s EPSS model. Since exploitation is already confirmed, this figure is mostly useful to compare activity. Collected Sep 29, 2026.

Description

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.

Official description from the NVD, collected Sep 29, 2026. CVE® description © The MITRE Corporation.

Kentico contains a failure to validate security headers. This deserialization can led to unauthenticated remote code execution.

Summary from CISA (KEV catalog).

CERT-FR advisories

No advisory among the latest CERT-FR publications this site follows. That does not mean there are none.

Information reused under the Open Licence 2.0 (Etalab); the date of last update is shown for each advisory. This site is neither affiliated with nor endorsed by ANSSI.

Sources for this page

  • CISA KEV catalog: exploitation, date added, required action, deadline, ransomware.
  • NVD (NIST): CVSS severity, publication date, description, vendor references.
  • EPSS (FIRST): probability of exploitation.
  • CERT-FR: advisories and alerts (in French).
  • Brand and category: indicative classification by this site (method).