CVE-2017-14116 — The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG599 device, when IP Passthrough mode is not used, configures WAN access to a caserver https service with the tech account and an empty password, which allows remote attackers to obtain root privileges by establishing a session on port 49955 and then installing new software, such as BusyBox with "nc -l" support

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HIGH

The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG599 device, when IP Passthrough mode is not used, configures WAN access to a caserver https service with the tech account and an empty password, which allows remote attackers to obtain root privileges by establishing a session on port 49955 and then installing new software, such as BusyBox with "nc -l" support

Published Sep 3, 2017

8.1

HIGH

CVSS 3.0

EPSS 3.34%

Description

The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG599 device, when IP Passthrough mode is not used, configures WAN access to a caserver https service with the tech account and an empty password, which allows remote attackers to obtain root privileges by establishing a session on port 49955 and then installing new software, such as BusyBox with "nc -l" support.

Affected products

Remediation

No remediation recorded yet.

Metrics

3.34% 0.03342

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

EPSS probability 0.03342

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	3.34% (0.03342)	88.26th	v5 (v2026.06.15)
Jun 15, 2026	3.34% (0.03342)	87.04th	v5 (v2026.06.15)
Mar 17, 2025	4.23% (0.04229)	88.02th	v4 (v2025.03.14)
Jul 20, 2024	0.75% (0.00751)	81.20th	v3 (v2023.03.01)
Feb 8, 2024	0.75% (0.00751)	80.40th	v3 (v2023.03.01)
Mar 7, 2023	0.75% (0.00751)	78.09th	v3 (v2023.03.01)
Mar 6, 2023	1.14% (0.01136)	59.45th	v2 (v2022.01.01)
Oct 18, 2022	1.14% (0.01136)	58.28th	v2 (v2022.01.01)
Apr 1, 2022	1.14% (0.01136)	56.27th	v2 (v2022.01.01)
Feb 4, 2022	1.14% (0.01136)	34.23th	v2 (v2022.01.01)
Feb 3, 2022	1.05% (0.01046)	28.66th	v1
Jan 6, 2022	1.05% (0.01046)	28.03th	v1
Sep 1, 2021	1.05% (0.01046)	65.02th	v1
Apr 14, 2021	1.05% (0.01046)	0.00th	v1

Weaknesses (1)

CWE-798

Hard-coded Credentials

References (3)

http://www.securityfocus.com/bid/100585
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://threatpost.com/bugs-in-arris-modems-distributed-by-att-vulnerable-to-trivial-attacks/127753/
x_refsource_MISCThird Party Advisory
https://www.nomotion.net/blog/sharknatto/
x_refsource_MISCExploitMitigationTechnical DescriptionThird Party Advisory

Link	Providers	Tags
http://www.securityfocus.com/bid/100585		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://threatpost.com/bugs-in-arris-modems-distributed-by-att-vulnerable-to-trivial-attacks/127753/		x_refsource_MISCThird Party Advisory
https://www.nomotion.net/blog/sharknatto/		x_refsource_MISCExploitMitigationTechnical DescriptionThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Sep 3, 2017

Updated Aug 5, 2024

Reserved Sep 3, 2017

Link CVE-2017-14116

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2017-14116

Red Hat

Severity n/a

Public date n/a

Links CVE-2017-14116