CVE-2017-9478

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST) and DPC3939 (firmware version…

published July 31, 2017

CVSS
—
EPSS
2%
Percentile
74.1
In the wild
Unconfirmed
What it is

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 sets the CM MAC address to a value with a two-byte offset from the MTA/VoIP MAC address, which indirectly allows remote attackers to discover hidden Home Security Wi-Fi networks by leveraging the embedding of the MTA/VoIP MAC address into the DNS hostname.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01510 · 74.1th percentile
Published
2017-07-31T03:00Z
EPSS history
Timeline
  • 31 JUL 03:00Z
    The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST) and DPC3939 (firmware version…
    cvelistv5