How severe is CVE-2021-35254?

CVE-2021-35254 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-35254 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35254?

CVE-2021-35254 primarily affects Solarwinds Webhelpdesk. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-35254?

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-2021-35254 published?

CVE-2021-35254 was published on 2022-03-25 and last updated on 2026-06-17.

CVE-2021-35254

CVE-2021-35254 is a high-severity vulnerability in Solarwinds Webhelpdesk with a CVSS 3.x base score of 8.2. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v2: 6.5
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Solarwinds Webhelpdesk
Published: 2022-03-25
Last modified: 2026-06-17

Description

SolarWinds received a report of a vulnerability related to an input that was not sanitized in WebHelpDesk. SolarWinds has removed this input field to prevent the misuse of this input in the future.

Frequently asked questions

What is CVE-2021-35254?: SolarWinds received a report of a vulnerability related to an input that was not sanitized in WebHelpDesk. SolarWinds has removed this input field to prevent the misuse of this input in the future.
How severe is CVE-2021-35254?: CVE-2021-35254 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-35254 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35254?: CVE-2021-35254 primarily affects Solarwinds Webhelpdesk. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-35254?: 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-2021-35254 published?: CVE-2021-35254 was published on 2022-03-25 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:solarwinds:webhelpdesk:*:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:webhelpdesk:12.7.8:-:*:*:*:*:*:*

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CVE-2019-16955 — Medium (CVSS 5.4): SolarWinds Web Help Desk 12.7.0 allows XSS via an uploaded SVG document in a request.

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