HOMEVULNERABILITIESCVE-2017-14116
HIGH

CVE-2017-14116

CWE-798Published: September 3, 2017· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2017-14116 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

att1 product(s)
u-verse firmware
commscope1 product(s)
arris nvg599
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/bid/100585
ADVISORYhttps://threatpost.com/bugs-in-arris-modems-distributed-by-att-vulnerable-to-trivial-attacks/127753/
ADVISORYhttps://www.nomotion.net/blog/sharknatto/
ADVISORYhttp://www.securityfocus.com/bid/100585
ADVISORYhttps://threatpost.com/bugs-in-arris-modems-distributed-by-att-vulnerable-to-trivial-attacks/127753/
ADVISORYhttps://www.nomotion.net/blog/sharknatto/

All References (6)

→
http://www.securityfocus.com/bid/100585Third Party Advisory · VDB Entry
→
https://threatpost.com/bugs-in-arris-modems-distributed-by-att-vulnerable-to-trivial-attacks/127753/Third Party Advisory
→
https://www.nomotion.net/blog/sharknatto/Exploit · Mitigation · Technical Description · Third Party Advisory
→
http://www.securityfocus.com/bid/100585Third Party Advisory · VDB Entry
→
https://threatpost.com/bugs-in-arris-modems-distributed-by-att-vulnerable-to-trivial-attacks/127753/Third Party Advisory
→
https://www.nomotion.net/blog/sharknatto/Exploit · Mitigation · Technical Description · Third Party Advisory

Quick Facts

CVE IDCVE-2017-14116
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-798
CISA KEVNo
Affected2 vendor(s)
PublishedSep 3, 2017

Related CVEs (CWE-798)

CVE-2025-7503
10.0
CVE-2025-42890
10.0
CVE-2025-48748
10.0
CVE-2026-45631
10.0
CVE-2021-40422
10.0
CVE-2018-5560
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-14116 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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