How severe is CVE-2021-37736?

CVE-2021-37736 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-37736 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37736?

CVE-2021-37736 affects Arubanetworks Clearpass Policy Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37736?

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

When was CVE-2021-37736 published?

CVE-2021-37736 was published on 2021-10-15 and last updated on 2026-06-17.

CVE-2021-37736

CVE-2021-37736 is a critical-severity vulnerability in Arubanetworks Clearpass Policy Manager with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Arubanetworks Clearpass Policy Manager
Published: 2021-10-15
Last modified: 2026-06-17

Description

A remote authentication bypass vulnerability was discovered in Aruba ClearPass Policy Manager version(s): ClearPass Policy Manager 6.10.x prior to 6.10.2 - - ClearPass Policy Manager 6.9.x prior to 6.9.7-HF1 - - ClearPass Policy Manager 6.8.x prior to 6.8.9-HF1. Aruba has released patches for ClearPass Policy Manager that address this security vulnerability.

Frequently asked questions

What is CVE-2021-37736?: A remote authentication bypass vulnerability was discovered in Aruba ClearPass Policy Manager version(s): ClearPass Policy Manager 6.10.x prior to 6.10.2 - - ClearPass Policy Manager 6.9.x prior to 6.9.7-HF1 - - ClearPass Policy Manager 6.8.x prior to 6.8.9-HF1. Aruba has released patches for ClearPass Policy Manager that address this security vulnerability.
How severe is CVE-2021-37736?: CVE-2021-37736 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-37736 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37736?: CVE-2021-37736 affects Arubanetworks Clearpass Policy Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37736?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-37736 published?: CVE-2021-37736 was published on 2021-10-15 and last updated on 2026-06-17.

References

https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-018.txt

Affected products (1)

cpe:2.3:a:arubanetworks:clearpass_policy_manager:*:*:*:*:*:*:*:*

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