High severity · published Dec 18, 2025
CVE-2020-36890
An access control bypass vulnerability in Kentico Xperience allows administrators to modify global administrator user privileges via unauthorized requests
7.2
CVSS
0.3%
EPSS
No
On KEV
Description
An access control bypass vulnerability in Kentico Xperience allows administrators to modify global administrator user privileges via unauthorized requests. Attackers could potentially compromise global administrator accounts and invalidate security-sensitive macros by manipulating user privilege levels.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XP
Xperience · Kentico
through 12.0.60 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36890
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-36890
Product
https://devnet.kentico.com/download/hotfixes
Third Party Advisory
https://www.vulncheck.com/advisories/kentico-xperience-administrator-access-control-bypass
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