CVE-2021-35254

HIGHNVD 8.28.8▲

8.2

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.

CVSS v3: 8.2
EG Score: 8.8(medium)
EPSS: 45.4%
KEV: Not listed

Published

March 25, 2022

Last Modified

November 21, 2024

References (4)

psirt@solarwindshttps://support.solarwinds.com/SuccessCenter/s/article/Web-Help-Desk-12-7-8-Hotfix-1-Release-Notes?language=en_US
psirt@solarwindshttps://www.solarwinds.com/trust-center/security-advisories/CVE-2021-35254
af854a3a-2127-422b-91ae-364da2661108https://support.solarwinds.com/SuccessCenter/s/article/Web-Help-Desk-12-7-8-Hotfix-1-Release-Notes?language=en_US
af854a3a-2127-422b-91ae-364da2661108https://www.solarwinds.com/trust-center/security-advisories/CVE-2021-35254

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-20Improper Input Validation

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-35254?

CVE-2021-35254 is a high vulnerability published on March 25, 2022. 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.

When was CVE-2021-35254 disclosed?

CVE-2021-35254 was first published in the National Vulnerability Database on March 25, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-35254 actively exploited?

CVE-2021-35254 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-35254?

CVE-2021-35254 has a CVSS v3 base score of 8.2 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.8.

How do I remediate CVE-2021-35254?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-35254, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-35254

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-35254?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)