Is CVE-2023-40900 actively exploited?

No active exploitation of CVE-2023-40900 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-40900 be exploited remotely?

Yes. CVE-2023-40900 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-40900?

CVE-2023-40900 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-40900

CRITICAL

CVE-2023-40900

CWE-787Published: August 24, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Tenda AC8 v4 US_AC8V4.0si_V16.03.34.06_cn was discovered to contain a stack overflow via parameter list at /goform/SetNetControlList.

NVD Source

Risk Analysis

This vulnerability is a stack overflow in the Tenda AC8 router firmware caused by improper handling of the list parameter. With a CVSS score of 9.8, it is considered critical as it allows for remote code execution without authentication.

There is no known public exploit for this vulnerability, and it is not currently listed in the CISA KEV catalog. However, it is remotely exploitable due to the network-based attack vector and low complexity.

Recommended Action

Users should update the Tenda AC8 firmware to a version beyond 16.03.34.06 if available. Ensure the device management interface is not exposed to the public internet.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-40900 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 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.