Symmetricom SyncServer S100 2.90.70.3, S200 1.30, S250 1.25, S300 2.65.0, and S350 2.80.1…
Priority LOW 28CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
Symmetricom SyncServer S100 2.90.70.3, S200 1.30, S250 1.25, S300 2.65.0, and S350 2.80.1 devices allow stored XSS via the newUserName parameter on the "User Creation, Deletion and Password Maintenance" screen (when creating a new user).
Why it matters now
EPSS 0.00668 52nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged 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
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microchip:syncserver_s100_firmware:2.90.70.3:*:*:*:*:*:*:* | 2.90.70.3 | Vulnerable | Microchip |
| cpe:2.3:h:microchip:syncserver_s100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microchip |
| cpe:2.3:o:microchip:syncserver_s200_firmware:1.30:*:*:*:*:*:*:* | 1.30 | Vulnerable | Microchip |
| cpe:2.3:h:microchip:syncserver_s200:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microchip |
| cpe:2.3:o:microchip:syncserver_s250_firmware:1.25:*:*:*:*:*:*:* | 1.25 | Vulnerable | Microchip |
| cpe:2.3:h:microchip:syncserver_s250:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microchip |
| cpe:2.3:o:microchip:syncserver_s300_firmware:2.65.0:*:*:*:*:*:*:* | 2.65.0 | Vulnerable | Microchip |
| cpe:2.3:h:microchip:syncserver_s300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microchip |
| cpe:2.3:o:microchip:syncserver_s350_firmware:2.80.1:*:*:*:*:*:*:* | 2.80.1 | Vulnerable | Microchip |
| cpe:2.3:h:microchip:syncserver_s350:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microchip |
- cpe:2.3:o:microchip:syncserver_s100_firmware:2.90.70.3:*:*:*:*:*:*:* Versions 2.90.70.3 Vulnerable ·Microchip
- cpe:2.3:h:microchip:syncserver_s100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microchip
- cpe:2.3:o:microchip:syncserver_s200_firmware:1.30:*:*:*:*:*:*:* Versions 1.30 Vulnerable ·Microchip
- cpe:2.3:h:microchip:syncserver_s200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microchip
- cpe:2.3:o:microchip:syncserver_s250_firmware:1.25:*:*:*:*:*:*:* Versions 1.25 Vulnerable ·Microchip
- cpe:2.3:h:microchip:syncserver_s250:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microchip
- cpe:2.3:o:microchip:syncserver_s300_firmware:2.65.0:*:*:*:*:*:*:* Versions 2.65.0 Vulnerable ·Microchip
- cpe:2.3:h:microchip:syncserver_s300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microchip
- cpe:2.3:o:microchip:syncserver_s350_firmware:2.80.1:*:*:*:*:*:*:* Versions 2.80.1 Vulnerable ·Microchip
- cpe:2.3:h:microchip:syncserver_s350:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microchip
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-9028
- 2026-10-03 Alias added: GHSA-x6wf-v6ph-h8xc
References
More Microchip Syncserver S100 Firmware vulnerabilities
- TI-2020-07252 Symmetricom SyncServer S100 2.90.70.3, S200 1.30, S250 1.25, S300 2.65.0, and S350 2.80.1… CVSS 3.1HIGH 7.5
- TI-2020-07251 Symmetricom SyncServer S100 2.90.70.3, S200 1.30, S250 1.25, S300 2.65.0, and S350 2.80.1… CVSS 3.1MEDIUM 6.5
- TI-2020-07250 Symmetricom SyncServer S100 2.90.70.3, S200 1.30, S250 1.25, S300 2.65.0, and S350 2.80.1… CVSS 3.1MEDIUM 6.5
- TI-2020-07249 Symmetricom SyncServer S100 2.90.70.3, S200 1.30, S250 1.25, S300 2.65.0, and S350 2.80.1… CVSS 3.1MEDIUM 6.5
- TI-2020-07248 Symmetricom SyncServer S100 2.90.70.3, S200 1.30, S250 1.25, S300 2.65.0, and S350 2.80.1… CVSS 3.1MEDIUM 6.5
- TI-2020-07247 Symmetricom SyncServer S100 2.90.70.3, S200 1.30, S250 1.25, S300 2.65.0, and S350 2.80.1… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2020-9028 · CVE Program
- CVE-2020-9028 · NVD
- FIRST EPSS
- GHSA-x6wf-v6ph-h8xc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences