How severe is CVE-2021-35220?

CVE-2021-35220 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-35220 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35220?

CVE-2021-35220 affects Solarwinds Orion Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35220?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-35220 published?

CVE-2021-35220 was published on 2021-08-31 and last updated on 2026-06-17.

CVE-2021-35220

CVE-2021-35220 is a high-severity vulnerability in Solarwinds Orion Platform with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.5
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Solarwinds Orion Platform
Published: 2021-08-31
Last modified: 2026-06-17

Description

Command Injection vulnerability in EmailWebPage API which can lead to a Remote Code Execution (RCE) from the Alerts Settings page.

Frequently asked questions

What is CVE-2021-35220?: Command Injection vulnerability in EmailWebPage API which can lead to a Remote Code Execution (RCE) from the Alerts Settings page.
How severe is CVE-2021-35220?: CVE-2021-35220 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-35220 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35220?: CVE-2021-35220 affects Solarwinds Orion Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35220?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-35220 published?: CVE-2021-35220 was published on 2021-08-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:solarwinds:orion_platform:*:*:*:*:*:*:*:*

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