CVE-2017-9484

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-07-31 · updated 2026-06-17
Weakness: CWE-200

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 a CM MAC address by sniffing Wi-Fi traffic and performing simple arithmetic calculations.

Affected products

Cisco Dpc3939 Firmware: dpc3939-p20-18-v303r20421746-170221a-cmcst, dpc3939-p20-18-v303r20421733-160420a-cmcst

References

https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-27.ipv6-cm-mac-leak.txt
https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-27.ipv6-cm-mac-leak.txt

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