How severe is CVE-2021-40990?

CVE-2021-40990 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-40990 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40990?

CVE-2021-40990 primarily affects Arubanetworks Clearpass Policy Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-40990?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-40990 published?

CVE-2021-40990 was published on 2021-10-15 and last updated on 2026-06-17.

CVE-2021-40990

CVE-2021-40990 is a medium-severity vulnerability in Arubanetworks Clearpass Policy Manager with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (60th 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 disclosure of sensitive information 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-2021-40990?: A remote disclosure of sensitive information 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-2021-40990?: CVE-2021-40990 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-40990 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40990?: CVE-2021-40990 primarily affects Arubanetworks Clearpass Policy Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-40990?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40990 published?: CVE-2021-40990 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 (3)

cpe:2.3:a:arubanetworks:clearpass_policy_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:arubanetworks:clearpass_policy_manager:6.8.9:-:*:*:*:*:*:*
cpe:2.3:a:arubanetworks:clearpass_policy_manager:6.9.7:-:*:*:*:*:*:*

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