Directory Transversal Vulnerability in Serv-U 15.3
Priority MEDIUM 47CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.12804 96th percentileScored 2026-11-07
Fix Fixed Serv-U (SolarWinds): 15.3 Hotfix 1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| SolarWinds | Serv-U | 15.3 only to before 15.3 Hotfix 1 | 15.3 Hotfix 1 | Patch available | CNA |
- Serv-U VendorSolarWinds Affected 15.3 only to before 15.3 Hotfix 1 Fixed in 15.3 Hotfix 1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:solarwinds:serv-u:15.3:-:*:*:*:*:*:* | 15.3 | Vulnerable | SolarWinds |
- cpe:2.3:a:solarwinds:serv-u:15.3:-:*:*:*:*:*:* Versions 15.3 Vulnerable ·SolarWinds
Remediation
- Fix · CNA Serv-U (SolarWinds) Fixed in 15.3 Hotfix 1
Timeline
- 2026-10-02 Threatist record created from CVE-2021-35250
- 2026-10-03 Alias added: GHSA-7pjc-f7p6-mpfc
References
More SolarWinds Serv-u vulnerabilities
- TI-2021-14105 Serv-U Remote Memory Escape Vulnerability KEVCVSS 3.1CRITICAL 10.0
- TI-2024-19183 SolarWinds Serv-U L Directory Transversal Vulnerability KEVCVSS 3.1HIGH 8.6
- TI-2026-22619 SolarWinds Serv-U Unauthenticated Denial of Service Vulnerability KEVCVSS 3.1HIGH 7.5
- TI-2021-14139 Improper Input Validation Vulnerability in Serv-U KEVCVSS 3.1MEDIUM 5.3
- TI-2024-30693 SolarWinds Serv-U FTP Service Directory Traversal Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
- TI-2026-22617 SolarWinds Serv-U Insecure Direct Object Reference (IDOR) Vulnerability CVSS 3.1CRITICAL 9.1
Sources
- CVE-2021-35250 · CVE Program
- CVE-2021-35250 · NVD
- FIRST EPSS
- GHSA-7pjc-f7p6-mpfc · GitHub Advisory Database · CC BY 4.0
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