How severe is CVE-2021-35221?

CVE-2021-35221 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.

Is CVE-2021-35221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35221?

CVE-2021-35221 affects Solarwinds Orion Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35221?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-35221 published?

CVE-2021-35221 was published on 2021-08-31 and last updated on 2026-06-17.

CVE-2021-35221

CVE-2021-35221 is a medium-severity vulnerability in Solarwinds Orion Platform with a CVSS 3.x base score of 6.3. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 5.5
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Solarwinds Orion Platform
Published: 2021-08-31
Last modified: 2026-06-17

Description

Improper Access Control Tampering Vulnerability using ImportAlert function which can lead to a Remote Code Execution (RCE) from the Alerts Settings page.

Frequently asked questions

What is CVE-2021-35221?: Improper Access Control Tampering Vulnerability using ImportAlert function which can lead to a Remote Code Execution (RCE) from the Alerts Settings page.
How severe is CVE-2021-35221?: CVE-2021-35221 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
Is CVE-2021-35221 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35221?: CVE-2021-35221 affects Solarwinds Orion Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35221?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-35221 published?: CVE-2021-35221 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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