CVE-2021-26677

Name: CVE-2021-26677
Creator: NVD / NIST
Published: 2021-02-23T19:15:13.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2021-26677 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.30%

21.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Arubanetworks	Clearpass Policy Manager	< 6.7.14
Arubanetworks	Clearpass Policy Manager	>= 6.8.0, < 6.8.7
Arubanetworks	Clearpass Policy Manager	>= 6.9.0, < 6.9.2

References

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

Timeline

Published: Feb 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26677?

How severe is CVE-2021-26677?

CVE-2021-26677 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26677?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-26677?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST