How severe is CVE-2021-36198?

CVE-2021-36198 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2021-36198 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36198?

CVE-2021-36198 affects Johnsoncontrols Kantech Entrapass. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36198?

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.

When was CVE-2021-36198 published?

CVE-2021-36198 was published on 2021-12-06 and last updated on 2026-06-17.

CVE-2021-36198

CVE-2021-36198 is a high-severity vulnerability in Johnsoncontrols Kantech Entrapass with a CVSS 3.x base score of 8.3. 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-668.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Johnsoncontrols Kantech Entrapass
Published: 2021-12-06
Last modified: 2026-06-17

Description

Successful exploitation of this vulnerability could allow an unauthorized user to access sensitive data.

Frequently asked questions

What is CVE-2021-36198?: Successful exploitation of this vulnerability could allow an unauthorized user to access sensitive data.
How severe is CVE-2021-36198?: CVE-2021-36198 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2021-36198 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36198?: CVE-2021-36198 affects Johnsoncontrols Kantech Entrapass. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36198?: 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.
When was CVE-2021-36198 published?: CVE-2021-36198 was published on 2021-12-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:johnsoncontrols:kantech_entrapass:*:*:*:*:-:*:*:*

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