Cyber Resilience

CVE-2021-21990

MediumPublic PoC

Published: 11 May 2021

Published
11 May 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0062 70.4th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-21990 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Vmware Workspace One Unified Endpoint Management. Its CVSS base score is 6.1 (Medium).

Operationally, ranked in the top 29.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

VMware Workspace one UEM console (2102 prior to 21.2.0.8, 2101 prior to 21.1.0.14, 2011 prior to 20.11.0.27, 2010 prior to 20.10.0.16,2008 prior to 20.8.0.28, 2007 prior to 20.7.0.14,2006 prior to 20.6.0.19, 2005 prior to 20.5.0.46, 2004 prior to 20.4.0.21, 2003…

more

prior to 20.3.0.23, 2001 prior to 20.1.0.32, 1912 prior to 19.12.0.24) contain a cross-site scripting vulnerability. VMware Workspace ONE UEM console does not validate incoming requests during device enrollment after leading to rendering of unsanitized input on the user device in response.

CWE(s)

Related Threats

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

Affected Assets

vmware
workspace one unified endpoint management
19.0.0.0 — 19.12.0.24 · 20.1.0.0 — 20.1.0.32 · 20.3.0.0 — 20.3.0.23

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.

addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References