No exploitation reportedFix available

CVE-2021-29140

Q: Is CVE-2021-29140 actively exploited?

Active exploitation of CVE-2021-29140 has not been confirmed. Its EPSS score was 1.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-29140?

CVE-2021-29140 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L.

No exploitation reported by the sources we read.

Published2021-04-29
Fixed in6.8.4 · 6.7.13
WeaknessCWE-611

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A remote XML external entity (XXE) 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.

Timeline

dates in UTC

2021-04-2913:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-29140?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-29140?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Arubanetworks clearpass

Branch	Affected	Fixed in	Source
6.8	≥ 6.8.0, < 6.8.4	6.8.4	NVD
6.7	≥ 6.7.0, < 6.7.13	6.7.13	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Arubanetworks clearpass to 6.8.4 · 6.7.13

Advisories and patches

www.arubanetworks.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.2read 2026-10-23
NVDCVSS 2.06.4read 2026-10-23
NVDweakness (CWE)CWE-611read 2026-10-23
FIRST EPSSEPSS score1.6 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Published: 2021-04-29
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-29140?

Is CVE-2021-29140 actively exploited?

Active exploitation of CVE-2021-29140 has not been confirmed. Its EPSS score was 1.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-29140?

CVE-2021-29140 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L.

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