CVE-2017-9483 — The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) devices allows Network Processor (NP) Linux users to obtain root access to the Application Processor (AP) Linux system via shell metacharacters in commands

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CRITICAL

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) devices allows Network Processor (NP) Linux users to obtain root access to the Application Processor (AP) Linux system via shell metacharacters in commands

Published Jul 31, 2017

9.8

CRITICAL

CVSS 3.0

EPSS 1.87%

Description

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) devices allows Network Processor (NP) Linux users to obtain root access to the Application Processor (AP) Linux system via shell metacharacters in commands.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.87% 0.01867

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01867

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (14 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.87% (0.01867)	78.54th	v5 (v2026.06.15)
Jun 15, 2026	1.87% (0.01867)	76.50th	v5 (v2026.06.15)
Mar 17, 2025	0.72% (0.00723)	70.86th	v4 (v2025.03.14)
Dec 17, 2024	12.90% (0.12895)	95.48th	v3 (v2023.03.01)
Feb 8, 2024	0.84% (0.00840)	81.53th	v3 (v2023.03.01)
Mar 7, 2023	0.84% (0.00840)	79.49th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Sep 10, 2022	0.89% (0.00885)	26.24th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00885)	24.24th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.42% (0.00416)	10.04th	v1
Jan 6, 2022	0.42% (0.00416)	9.79th	v1
Sep 1, 2021	0.42% (0.00416)	25.53th	v1
Apr 14, 2021	0.42% (0.00416)	0.00th	v1

Weaknesses (1)

CWE-78

OS Command Injection

References (1)

https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-26.arbitrary-command-execution.txt
x_refsource_MISCExploitThird Party Advisory

Link	Providers	Tags
https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-26.arbitrary-command-execution.txt		x_refsource_MISCExploitThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Jul 31, 2017

Updated Aug 5, 2024

Reserved Jun 7, 2017

Link CVE-2017-9483

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2017-9483

Red Hat

Severity n/a

Public date n/a

Links CVE-2017-9483