Authentication bypass in Hughes Satellite Modem HN7740S
Priority MEDIUM 42CWE-288Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-288.
Summary
Hughes high-performance broadband satellite modems, models HN7740S DW7000 HN7000S/SM, is vulnerable to an authentication bypass using an alternate path or channel. By default, port 1953 is accessible via telnet and does not require authentication. An unauthenticated remote user can access many administrative commands via this interface, including rebooting the modem.
Why it matters now
EPSS 0.02214 82nd percentileScored 2026-11-07
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 |
|---|---|---|---|---|---|
| Hughes Satellite Modem | HN7740S | — | — | No fix listed | CNA |
| Hughes Satellite Modem | DW7000 | — | — | No fix listed | CNA |
| Hughes Satellite Modem | HN7000S/SM | — | — | No fix listed | CNA |
- HN7740S VendorHughes Satellite Modem Affected — Fixed in — No fix listed CNA
- DW7000 VendorHughes Satellite Modem Affected — Fixed in — No fix listed CNA
- HN7000S/SM VendorHughes Satellite Modem Affected — Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:hughes:hn7740s_firmware:6.9.0.34:*:*:*:*:*:*:* | 6.9.0.34 | Vulnerable | Hughes Satellite Modem |
| cpe:2.3:h:hughes:hn7740s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Hughes Satellite Modem |
| cpe:2.3:o:hughes:dw7000_firmware:6.9.0.34:*:*:*:*:*:*:* | 6.9.0.34 | Vulnerable | Hughes Satellite Modem |
| cpe:2.3:h:hughes:dw7000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Hughes Satellite Modem |
| cpe:2.3:o:hughes:hn7000s_firmware:6.9.0.34:*:*:*:*:*:*:* | 6.9.0.34 | Vulnerable | Hughes Satellite Modem |
| cpe:2.3:h:hughes:hn7000s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Hughes Satellite Modem |
| cpe:2.3:o:hughes:hn7000sm_firmware:6.9.0.34:*:*:*:*:*:*:* | 6.9.0.34 | Vulnerable | Hughes Satellite Modem |
| cpe:2.3:h:hughes:hn7000sm:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Hughes Satellite Modem |
- cpe:2.3:o:hughes:hn7740s_firmware:6.9.0.34:*:*:*:*:*:*:* Versions 6.9.0.34 Vulnerable ·Hughes Satellite Modem
- cpe:2.3:h:hughes:hn7740s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Hughes Satellite Modem
- cpe:2.3:o:hughes:dw7000_firmware:6.9.0.34:*:*:*:*:*:*:* Versions 6.9.0.34 Vulnerable ·Hughes Satellite Modem
- cpe:2.3:h:hughes:dw7000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Hughes Satellite Modem
- cpe:2.3:o:hughes:hn7000s_firmware:6.9.0.34:*:*:*:*:*:*:* Versions 6.9.0.34 Vulnerable ·Hughes Satellite Modem
- cpe:2.3:h:hughes:hn7000s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Hughes Satellite Modem
- cpe:2.3:o:hughes:hn7000sm_firmware:6.9.0.34:*:*:*:*:*:*:* Versions 6.9.0.34 Vulnerable ·Hughes Satellite Modem
- cpe:2.3:h:hughes:hn7000sm:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Hughes Satellite Modem
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2016-9497
- 2026-10-03 Alias added: GHSA-qq6r-2668-c4wg
References
Advisory 1
More Hughes Satellite Modem Dw7000 Firmware vulnerabilities
- TI-2016-07761 Hard-coded credentials in Hughes Satellite Modem HN7740S CVSS 3.0HIGH 8.8
- TI-2016-07762 Missing authentication in Hughes Satellite Modem HN7740S CVSS 3.0MEDIUM 6.5
- TI-2016-07760 Improper input validation in Hughes Satellite Modem HN7740S CVSS 3.0MEDIUM 6.5
Sources
- CVE-2016-9497 · CVE Program
- CVE-2016-9497 · NVD
- FIRST EPSS
- GHSA-qq6r-2668-c4wg · 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