Is CVE-2021-26678 in the CISA KEV catalog?

No. CVE-2021-26678 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-26678?

CVE-2021-26678 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2021-26678?

CVE-2021-26678 has an EPSS score of 0.87% (55th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-26678?

Upgrade clearpass policy manager to 6.9.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-26678

MEDIUM

6.1

CVSS v3

NVD

Description

A remote unauthenticated stored cross-site scripting (XSS) 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 the web-based management interface of ClearPass could allow an unauthenticated remote attacker to conduct a stored cross-site scripting (XSS) attack against an administrative user of the interface. A successful exploit could allow an attacker to execute arbitrary script code in a victim’s browser in the context of the affected interface.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

clearpass policy managerNVD

Affected:>= 6.9.0, < 6.9.2Fixed in:6.9.2CVE-2021-26678derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploit Intelligence

0.87%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Vendor Advisory1

arubanetworks.com

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.