CVE-2016-9497 | Hughes high-performance broadband satellite modems, models HN7740S DW7000 HN7000S/SM, is vulnerable to an authentication bypass using an alternate path or channel

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.

Published: 2018-07-13 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-9497 is rated High Risk (65/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.21%). EPSS rose +1.70% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-9497

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.52% 2.21% +1.70%
2 2026-05-20 3.69% 0.52% -3.17%
3 2026-05-11 — 3.69% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-9497

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.0 HIGH
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
8.3 2.0 HIGH
AV:A/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 6.5 10.0 [email protected]

Weakness enumeration for CVE-2016-9497

Affected software / configurations for CVE-2016-9497

Vendor Product Version Raw CPE
hughes hn7740s_firmware 6.9.0.34 cpe:2.3:o:hughes:hn7740s_firmware:6.9.0.34:*:*:*:*:*:*:*
hughes dw7000_firmware 6.9.0.34 cpe:2.3:o:hughes:dw7000_firmware:6.9.0.34:*:*:*:*:*:*:*
hughes hn7000s_firmware 6.9.0.34 cpe:2.3:o:hughes:hn7000s_firmware:6.9.0.34:*:*:*:*:*:*:*
hughes hn7000sm_firmware 6.9.0.34 cpe:2.3:o:hughes:hn7000sm_firmware:6.9.0.34:*:*:*:*:*:*:*

References for CVE-2016-9497

URL Tags
https://www.kb.cert.org/vuls/id/614751 Third Party Advisory US Government Resource
https://www.securityfocus.com/bid/96244 Third Party Advisory VDB Entry
cvelogic Threat Intelligence