Cyber Resilience

CVE-2021-35222

High

Published: 31 August 2021

Published
31 August 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 8.0 CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L
EPSS Score 0.0137 80.6th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-35222 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Solarwinds Orion Platform. Its CVSS base score is 8.0 (High).

Operationally, ranked in the top 19.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

This vulnerability allows attackers to impersonate users and perform arbitrary actions leading to a Remote Code Execution (RCE) from the Alerts Settings page.

CWE(s)
CWE-79

Related Threats

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

Affected Assets

solarwinds
orion platform
≤ 2020.2.6

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-79

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

SI-10 Information Input Validation
addresses: CWE-79

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

SI-15 Information Output Filtering
addresses: CWE-79

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

References