How severe is CVE-2021-29139?

CVE-2021-29139 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-29139 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29139?

CVE-2021-29139 primarily affects Arubanetworks Clearpass. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-29139?

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

When was CVE-2021-29139 published?

CVE-2021-29139 was published on 2021-04-29 and last updated on 2026-06-17.

CVE-2021-29139

CVE-2021-29139 is a medium-severity vulnerability in Arubanetworks Clearpass with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Arubanetworks Clearpass
Published: 2021-04-29
Last modified: 2026-06-17

Description

A remote cross-site scripting (XSS) vulnerability was discovered in Aruba ClearPass Policy Manager version(s) prior to 6.9.5, 6.8.9, 6.7.14-HF1. Aruba has released patches for Aruba ClearPass Policy Manager that address this security vulnerability.

Frequently asked questions

What is CVE-2021-29139?: A remote cross-site scripting (XSS) vulnerability was discovered in Aruba ClearPass Policy Manager version(s) prior to 6.9.5, 6.8.9, 6.7.14-HF1. Aruba has released patches for Aruba ClearPass Policy Manager that address this security vulnerability.
How severe is CVE-2021-29139?: CVE-2021-29139 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-29139 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29139?: CVE-2021-29139 primarily affects Arubanetworks Clearpass. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-29139?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-29139 published?: CVE-2021-29139 was published on 2021-04-29 and last updated on 2026-06-17.

References

https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-009.txt

Affected products (2)

cpe:2.3:a:arubanetworks:clearpass:*:*:*:*:*:*:*:*
cpe:2.3:a:arubanetworks:clearpass:6.7.14:-:*:*:*:*:*:*

More vulnerabilities in Arubanetworks Clearpass

CVE-2014-6626 — Critical (CVSS 10.0): Aruba Networks ClearPass before 6.3.6 and 6.4.x before 6.4.1 does not properly restrict access to unspecified…
CVE-2014-5342 — Critical (CVSS 10.0): Aruba Networks ClearPass before 6.3.5 and 6.4.x before 6.4.1 allows remote attackers to execute arbitrary commands via…
CVE-2021-29145 — Critical (CVSS 9.8): A remote server side request forgery (SSRF) remote code execution vulnerability was discovered in Aruba ClearPass…
CVE-2020-7114 — Critical (CVSS 9.8): A vulnerability exists allowing attackers, when present in the same network segment as ClearPass' management interface,…
CVE-2016-4401 — Critical (CVSS 9.8): Aruba ClearPass Policy Manager before 6.5.7 and 6.6.x before 6.6.2 allows attackers to obtain database credentials.
CVE-2016-2034 — Critical (CVSS 9.8): SQL injection vulnerability in ClearPass Policy Manager 6.5.x through 6.5.6 and 6.6.0.

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