An issue was discovered in fs.com S3900 24T4S 1.7.0 and earlier.
Priority MEDIUM 40CWE-352Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-352.
Summary
An issue was discovered in fs.com S3900 24T4S 1.7.0 and earlier. The form does not have an authentication or token authentication mechanism that allows remote attackers to forge requests on behalf of a site administrator to change all settings including deleting users, creating new users with escalated privileges.
Why it matters now
EPSS 0.00971 62nd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-24033
- 2026-10-03 Alias added: GHSA-hmcm-7mfh-522v
References
More Fs S3900 24t4s Firmware vulnerabilities
- TI-2023-14236 FS S3900-24T4S devices allow authenticated attackers with guest access to escalate their… CVSS 3.1HIGH 8.8
Sources
- CVE-2020-24033 · CVE Program
- CVE-2020-24033 · NVD
- FIRST EPSS
- GHSA-hmcm-7mfh-522v · GitHub Advisory Database · CC BY 4.0
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