Is CVE-2023-40896 actively exploited?

No active exploitation of CVE-2023-40896 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-40896 be exploited remotely?

Yes. CVE-2023-40896 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-40896?

CVE-2023-40896 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-40896

CRITICAL

CVE-2023-40896

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 and bindnum at /goform/SetIpMacBind.

NVD Source

Risk Analysis

The Tenda AC8 firmware contains a stack overflow vulnerability triggered by the list and bindnum parameters. This critical flaw allows unauthenticated remote attackers to achieve code execution, resulting in a 9.8 CVSS score.

No public exploit is known for this vulnerability, and it is not currently in the CISA KEV. It is remotely exploitable due to the network-based vector.

Recommended Action

Upgrade the router firmware to the latest version. Ensure that the web administration panel is not accessible from the WAN side.

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-2023-40896 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.