HOMEVULNERABILITIESCVE-2017-9476
MEDIUM

CVE-2017-9476

CWE-200Published: July 31, 2017· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST); Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST); and Arris TG1682G (eMTA&DOCSIS version 10.0.132.SIP.PC20.CT, software version TG1682_2.2p7s2_PROD_sey) devices makes it easy for remote attackers to determine the hidden SSID and passphrase for a Home Security Wi-Fi network.

NVD Source

Technical Analysis

CVE-2017-9476 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

Cisco2 product(s)
dpc3939 firmwaredpc3939
commscope2 product(s)
arris tg1682g firmwarearris tg1682g
Source: NVD CPE · 6 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-18.home-security-wifi-network.txt
ADVISORYhttps://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-18.home-security-wifi-network.txt

All References (2)

→
https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-18.home-security-wifi-network.txtExploit · Third Party Advisory
→
https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-18.home-security-wifi-network.txtExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2017-9476
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-200
CISA KEVNo
Affected2 vendor(s)
PublishedJul 31, 2017

Related CVEs (CWE-200)

CVE-2008-3914
10.0
CVE-2008-0082
10.0
CVE-2014-9162
10.0
CVE-2025-53624
10.0
CVE-2015-0987
10.0
CVE-2008-3010
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-9476 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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