How severe is CVE-2021-26686?

CVE-2021-26686 has a CVSS 3.x base score of 6.5, rated medium 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 none.

Is CVE-2021-26686 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26686?

CVE-2021-26686 affects Arubanetworks Clearpass Policy Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26686?

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

When was CVE-2021-26686 published?

CVE-2021-26686 was published on 2021-02-23 and last updated on 2026-06-17.

CVE-2021-26686

CVE-2021-26686 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. The underlying weakness is classified as CWE-89.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 5.5
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Arubanetworks Clearpass Policy Manager
Published: 2021-02-23
Last modified: 2026-06-17

Description

A remote authenticated SQL Injection vulnerabilitiy 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 the web-based management interface API of ClearPass could allow an authenticated remote attacker to conduct SQL injection attacks against the ClearPass instance. An attacker could exploit this vulnerability to obtain and modify sensitive information in the underlying database.

Frequently asked questions

What is CVE-2021-26686?: A remote authenticated SQL Injection vulnerabilitiy 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 the web-based management interface API of ClearPass could allow an authenticated remote attacker to conduct SQL injection attacks against the ClearPass instance. An attacker could exploit this vulnerability to obtain and modify sensitive information in the underlying database.
How severe is CVE-2021-26686?: CVE-2021-26686 has a CVSS 3.x base score of 6.5, rated medium 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 none.
Is CVE-2021-26686 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26686?: CVE-2021-26686 affects Arubanetworks Clearpass Policy Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26686?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-26686 published?: CVE-2021-26686 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:*:*:*:*:*:*:*:*

More vulnerabilities in Arubanetworks Clearpass Policy Manager

CVE-2022-23660 — Critical (CVSS 10.0): A remote authentication bypass vulnerability was discovered in Aruba ClearPass Policy Manager version(s): 6.10.4 and…
CVE-2022-23658 — Critical (CVSS 10.0): A remote authentication bypass vulnerability was discovered in Aruba ClearPass Policy Manager version(s): 6.10.4 and…
CVE-2022-23657 — Critical (CVSS 10.0): A remote authentication bypass vulnerability was discovered in Aruba ClearPass Policy Manager version(s): 6.10.4 and…
CVE-2023-25589 — Critical (CVSS 9.8): A vulnerability in the web-based management interface of ClearPass Policy Manager could allow an unauthenticated remote…
CVE-2021-40997 — Critical (CVSS 9.8): A remote authentication bypass vulnerability was discovered in Aruba ClearPass Policy Manager version(s): ClearPass…
CVE-2021-40996 — Critical (CVSS 9.8): A remote authentication bypass vulnerability was discovered in Aruba ClearPass Policy Manager version(s): ClearPass…

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