How severe is CVE-2021-26677?

CVE-2021-26677 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-26677 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26677?

CVE-2021-26677 affects Arubanetworks Clearpass Policy Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26677?

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-2021-26677 published?

CVE-2021-26677 was published on 2021-02-23 and last updated on 2026-06-17.

CVE-2021-26677

CVE-2021-26677 is a high-severity vulnerability in Arubanetworks Clearpass Policy Manager with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Arubanetworks Clearpass Policy Manager
Published: 2021-02-23
Last modified: 2026-06-17

Description

A local authenticated escalation of privilege vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8.8-HF1, 6.7.14-HF1. A vulnerability in ClearPass OnGuard could allow local authenticated users on a Windows platform to elevate their privileges. A successful exploit could allow an attacker to execute arbitrary code with SYSTEM level privileges.

Frequently asked questions

What is CVE-2021-26677?: A local authenticated escalation of privilege vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8.8-HF1, 6.7.14-HF1. A vulnerability in ClearPass OnGuard could allow local authenticated users on a Windows platform to elevate their privileges. A successful exploit could allow an attacker to execute arbitrary code with SYSTEM level privileges.
How severe is CVE-2021-26677?: CVE-2021-26677 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-26677 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26677?: CVE-2021-26677 affects Arubanetworks Clearpass Policy Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26677?: 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-2021-26677 published?: CVE-2021-26677 was published on 2021-02-23 and last updated on 2026-06-17.

References

https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-004.txt

Affected products (1)

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

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