How severe is CVE-2021-35213?

CVE-2021-35213 has a CVSS 3.x base score of 8.9, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2021-35213 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35213?

CVE-2021-35213 affects Solarwinds Orion Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35213?

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-2021-35213 published?

CVE-2021-35213 was published on 2021-08-31 and last updated on 2026-06-17.

CVE-2021-35213

CVE-2021-35213 is a high-severity vulnerability in Solarwinds Orion Platform with a CVSS 3.x base score of 8.9. 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: High (CVSS 3.x base score 8.9)
CVSS v2: 9.0
EPSS exploit prediction: 3% (87th 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

An Improper Access Control Privilege Escalation Vulnerability was discovered in the User Setting of Orion Platform version 2020.2.5. It allows a guest user to elevate privileges to the Administrator using this vulnerability. Authentication is required to exploit the vulnerability.

Frequently asked questions

What is CVE-2021-35213?: An Improper Access Control Privilege Escalation Vulnerability was discovered in the User Setting of Orion Platform version 2020.2.5. It allows a guest user to elevate privileges to the Administrator using this vulnerability. Authentication is required to exploit the vulnerability.
How severe is CVE-2021-35213?: CVE-2021-35213 has a CVSS 3.x base score of 8.9, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2021-35213 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35213?: CVE-2021-35213 affects Solarwinds Orion Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35213?: 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-2021-35213 published?: CVE-2021-35213 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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