CVE-2017-14116 json
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…
published 2017-09-03 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-5628
- cvss
- 8.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.3%
- EPSS 3.3% chance of exploitation in 30 days, percentile 88%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
3.34% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- nomotion.net https://www.nomotion.net/blog/sharknatto/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-798 Use of Hard-coded Credentials
References
-
nomotion.net
/blog/sharknatto/
exploit, mitigation, technical-description, third-party-advisory
-
threatpost.com
/bugs-in-arris-modems-distributed-by-att-vulnerable-to-trivial-attacks/127753/
third-party-advisory
-
securityfocus.com
/bid/100585
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-14116
- NVD CVE-2017-14116
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.