What’s Vulnerable › Vulnerabilities

CVE-2021-35221: ImportAlert Improper Access Control Tampering Vulnerability

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% 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-284

Description

Improper Access Control Tampering Vulnerability using ImportAlert function which can lead 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-ImportAlert-Improper-Access-Control-Tampering-Vulnerability-CVE-2021-35221?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-2021-35221
• https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm
• https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-ImportAlert-Improper-Access-Control-Tampering-Vulnerability-CVE-2021-35221?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-2021-35221

Get alerted when CVE-2021-35221 or the next vulnerability affects your stack