How severe is CVE-2017-14116?

CVE-2017-14116 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-14116 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-14116?

CVE-2017-14116 affects Att U-verse Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-14116?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-14116 published?

CVE-2017-14116 was published on 2017-09-03 and last updated on 2026-06-17.

CVE-2017-14116

CVE-2017-14116 is a high-severity vulnerability in Att U-verse Firmware with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Att U-verse Firmware
Published: 2017-09-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2017-14116?: CVE-2017-14116 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-14116 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-14116?: CVE-2017-14116 affects Att U-verse Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-14116?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-14116 published?: CVE-2017-14116 was published on 2017-09-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:att:u-verse_firmware:9.2.2h0d83:*:*:*:*:*:*:*

More vulnerabilities in Att U-verse Firmware

CVE-2017-14115 — High (CVSS 8.1): The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG589 and NVG599 devices, when IP Passthrough mode is not used,…
CVE-2017-10793 — High (CVSS 8.1): The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG589, NVG599, and unspecified other devices, when IP Passthrough…
CVE-2017-14117 — Medium (CVSS 5.9): The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG589 and NVG599 devices, when IP Passthrough mode is not used,…

All CVEs affecting Att U-verse Firmware →

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