How severe is CVE-2020-36890?

CVE-2020-36890 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-36890 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-36890?

CVE-2020-36890 affects Kentico Xperience. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-36890?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2020-36890 have an EU (EUVD) identifier?

Yes. CVE-2020-36890 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204364.

When was CVE-2020-36890 published?

CVE-2020-36890 was published on 2025-12-18 and last updated on 2026-08-10.

CVE-2020-36890

CVE-2020-36890 is a high-severity vulnerability in Kentico Xperience with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 8.6
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204364
Weakness: CWE-862
Affected product: Kentico Xperience
Published: 2025-12-18
Last modified: 2026-08-10

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.

Frequently asked questions

What is CVE-2020-36890?: 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.
How severe is CVE-2020-36890?: CVE-2020-36890 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-36890 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-36890?: CVE-2020-36890 affects Kentico Xperience. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-36890?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2020-36890 have an EU (EUVD) identifier?: Yes. CVE-2020-36890 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204364.
When was CVE-2020-36890 published?: CVE-2020-36890 was published on 2025-12-18 and last updated on 2026-08-10.

References

Affected products (1)

cpe:2.3:a:kentico:xperience:*:*:*:*:*:*:*:*

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