# What is CVE-2017-14117?

> CVE-2017-14117 is a medium-severity flaw (CVSS 5.9) in Arris Nvg589 from Commscope, published on 3 September 2017. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 8.0%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2017-14117

## At a glance

- **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle.
- **Precursor Intelligence risk score:** 42 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes.
- **Severity:** Medium (CVSS 5.9 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 8.0% (latest exploit-likelihood forecast)
- **Published:** 3 September 2017
- **Record last updated:** 20 April 2025
- **Main product:** Arris Nvg589 from Commscope
- **Affected products:** 3

## What is CVE-2017-14117? In plain terms

It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can change data.

### The official description

The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG589 and NVG599 devices, when IP Passthrough mode is not used, configures an unauthenticated proxy service on WAN TCP port 49152, which allows remote attackers to establish arbitrary TCP connections to intranet hosts by sending \x2a\xce\x01 followed by other predictable values.

### What kind of flaw is it?

- CWE-287: Improper Authentication

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Hard: conditions must line up
- Login needed first: No login needed
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can change data

Severity vector: `CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N`

## Is CVE-2017-14117 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 8.0%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 8.0%, 8.0%, 8.0%, 8.0%, 8.0%, 8.0%, 8.0%.

### Timeline

- 3 September 2017: Published
- 20 April 2025: Record last updated
- 16 June 2026: Exploit likelihood fell

### How Precursor Intelligence ranks it

CVE-2017-14117 scores **42 out of 100 (Medium)**, with the action "Plan remediation".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2017-14117?

The published record lists 3 products.

- [Arris Nvg589](https://www.precursorintelligence.com/product/commscope/arris_nvg589) by [Commscope](https://www.precursorintelligence.com/vendors/commscope) (Hardware): version not specified
- [Arris Nvg599](https://www.precursorintelligence.com/product/commscope/arris_nvg599) by [Commscope](https://www.precursorintelligence.com/vendors/commscope) (Hardware): version not specified
- [U-Verse Firmware](https://www.precursorintelligence.com/product/att/u-verse_firmware) by [Att](https://www.precursorintelligence.com/vendors/att) (Operating system): 9.2.2h0d83

## How do I fix CVE-2017-14117?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [nomotion.net](https://www.nomotion.net/blog/sharknatto/) (Exploit, Mitigation, Technical description, Third-party advisory)
- [securityfocus.com](http://www.securityfocus.com/bid/100585) (Third-party advisory, Vulnerability database)
- [threatpost.com](https://threatpost.com/bugs-in-arris-modems-distributed-by-att-vulnerable-to-trivial-attacks/127753/) (Third-party advisory)

## Questions

### What is CVE-2017-14117?

CVE-2017-14117 is a medium-severity flaw in Arris Nvg589 from Commscope, published on 3 September 2017. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can change data.

### How serious is CVE-2017-14117?

It scores 5.9 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2017-14117 is 42 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2017-14117 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 8.0%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2017-14117 affect?

For Arris Nvg589 from Commscope: version not specified. The record lists 3 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2017-14117?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2017-14117 affect you?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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