VIR Vulnerability Intelligence Relay

CVE-2017-9477

medium
Published 2017-07-31 · Modified 2026-05-13
CVSS v3
6.5
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v2
3.3
VIR risk
6.5

Description

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST) and DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) devices allows remote attackers to discover the CM MAC address by connecting to the device's xfinitywifi hotspot.

Predictions

Exploit likelihood
65%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-19.wifi-dhcp-cm-mac-leak.txt

References

CWEs

CWE-200

Verify integrity in audit chain (admin only). AS-IS.