What’s Vulnerable › Vulnerabilities

CVE-2021-35222: Resource.aspx Reflected Cross-Site Scripting Vulnerability

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-31 · updated 2026-06-17
• Weakness: CWE-79

Description

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

Affected products

• SolarWinds Orion Platform: before 2020.2.6 — fixed in 2020.2.6

How to fix

Upgrade to a fixed version: SolarWinds Orion Platform 2020.2.6. Check the vendor advisory for mitigations.

References

• https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm
• https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Resource-aspx-Reflected-Cross-Site-Scripting-Vulnerability-CVE-2021-35222?language=en_US
• https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US
• https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35222
• https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm
• https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Resource-aspx-Reflected-Cross-Site-Scripting-Vulnerability-CVE-2021-35222?language=en_US
• https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US
• https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35222

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