CVE-2021-35250

HIGHNVD 7.57.5—Elevated

7.5

A researcher reported a Directory Transversal Vulnerability in Serv-U 15.3. This may allow access to files relating to the Serv-U installation and server files. This issue has been resolved in Serv-U 15.3 Hotfix 1.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 99.2%
KEV: Not listed

Published

April 25, 2022

Last Modified

November 21, 2024

References (4)

psirt@solarwindshttps://support.solarwinds.com/SuccessCenter/s/article/Serv-U-15-3-HotFix-1?language=en_US
psirt@solarwindshttps://www.solarwinds.com/trust-center/security-advisories/cve-2021-35250
af854a3a-2127-422b-91ae-364da2661108https://support.solarwinds.com/SuccessCenter/s/article/Serv-U-15-3-HotFix-1?language=en_US
af854a3a-2127-422b-91ae-364da2661108https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35250

Weakness Classification(1)

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

CWE-22Path Traversal

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCrissor41/SolarWinds-CVE-2021-35250
First seen Apr 13, 2023
Open source ↗
Nucleihttp/cves/2021/CVE-2021-35250.yaml
First seen Jan 1, 2021
SolarWinds Serv-U 15.3 - Directory Traversal
Open source ↗

Frequently asked(5)

What is CVE-2021-35250?

CVE-2021-35250 is a high vulnerability published on April 25, 2022. A researcher reported a Directory Transversal Vulnerability in Serv-U 15.3. This may allow access to files relating to the Serv-U installation and server files. This issue has been resolved in Serv-U 15.3 Hotfix 1.

When was CVE-2021-35250 disclosed?

CVE-2021-35250 was first published in the National Vulnerability Database on April 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-2021-35250 actively exploited?

CVE-2021-35250 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-35250?

CVE-2021-35250 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-35250?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-35250, 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-2021-35250

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-35250?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)