How severe is CVE-2021-3109?

CVE-2021-3109 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-3109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3109?

CVE-2021-3109 affects Solarwinds Orion Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3109?

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

When was CVE-2021-3109 published?

CVE-2021-3109 was published on 2021-03-26 and last updated on 2026-06-17.

CVE-2021-3109

CVE-2021-3109 is a medium-severity vulnerability in Solarwinds Orion Platform with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 4.9
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Solarwinds Orion Platform
Published: 2021-03-26
Last modified: 2026-06-17

Description

The custom menu item options page in SolarWinds Orion Platform before 2020.2.5 allows Reverse Tabnabbing in the context of an administrator account.

Frequently asked questions

What is CVE-2021-3109?: The custom menu item options page in SolarWinds Orion Platform before 2020.2.5 allows Reverse Tabnabbing in the context of an administrator account.
How severe is CVE-2021-3109?: CVE-2021-3109 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-3109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3109?: CVE-2021-3109 affects Solarwinds Orion Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3109?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-3109 published?: CVE-2021-3109 was published on 2021-03-26 and last updated on 2026-06-17.

References

Affected products (1)

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

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