Is CVE-2023-40038 actively exploited?

No active exploitation of CVE-2023-40038 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-40038 be exploited remotely?

Partially. CVE-2023-40038 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2023-40038?

CVE-2023-40038 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2023-40038

HIGH

CVE-2023-40038

CWE-287Published: December 27, 2023· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Arris DG860A and DG1670A devices have predictable default WPA2 PSKs that could lead to unauthorized remote access. (They use the first 6 characters of the SSID and the last 6 characters of the BSSID, decrementing the last digit.)

NVD Source

Technical Analysis

CVE-2023-40038 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

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 8.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.