Cyber Resilience

CVE-2021-29140

High

Published: 29 April 2021

Published
29 April 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
EPSS Score 0.0075 73.6th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-29140 is a high-severity Improper Restriction of XML External Entity Reference (CWE-611) vulnerability in Arubanetworks Clearpass. Its CVSS base score is 8.2 (High).

Operationally, ranked in the top 26.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-611

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

arubanetworks
clearpass
6.7.0 — 6.7.13 · 6.8.0 — 6.8.4

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-611

Penetration testing includes XML external entity payloads, detecting XXE vulnerabilities and enabling their mitigation.

SI-4 System Monitoring
addresses: CWE-611

Identifies XML external entity processing via monitoring of unusual file/network access or resource usage.

References