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CVE-2017-9476

21
FAUCET Score

CVE-2017-9476 describes a vulnerability in Comcast firmware for Cisco DPC3939 and Arris TG1682G devices that allows remote attackers to easily discover the hidden SSID and passphrase of a Home Security Wi-Fi network. This medium-severity vulnerability (CVSS 6.5) has a low attack complexity and high confidentiality impact, as it exposes sensitive network information. While there is no evidence of active exploitation, readily available exploit code, or significant community discussion, the vulnerability remains a concern for affected devices.

Impacted Technologies

VendorProductVersion(s)CPE
dpc3939-p20-18-v303r20421746-170221a-cmcstCPE matchmatch criteria
cpe:2.3:o:cisco:dpc3939_firmware:dpc3939-p20-18-v303r20421746-170221a-cmcst:*:*:*:*:*:*:*
dpc3939-p20-18-v303r20421733-160420a-cmcstCPE matchmatch criteria
cpe:2.3:o:cisco:dpc3939_firmware:dpc3939-p20-18-v303r20421733-160420a-cmcst:*:*:*:*:*:*:*
10.0.132.sip.pc20.ctCPE matchmatch criteria
cpe:2.3:o:commscope:arris_tg1682g_firmware:10.0.132.sip.pc20.ct:*:*:*:*:*:*:*
tg1682_2.2p7s2_prod_seyCPE matchmatch criteria
cpe:2.3:o:commscope:arris_tg1682g_firmware:tg1682_2.2p7s2_prod_sey:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.70%
Probability of exploitation in next 30 days
EPSS Percentile
74.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0170 is in the 95th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / BastilleResearch/CableTap/blob/master/doc/advisories/bastille-18.home-security-wifi-network.txt
ExploitThird Party Advisory