Is CVE-2022-40854 actively exploited?

No active exploitation of CVE-2022-40854 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-40854 be exploited remotely?

Yes. CVE-2022-40854 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-40854?

CVE-2022-40854 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-40854

CWE-787Published: September 23, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Tenda AC18 router contained a stack overflow vulnerability in /goform/fast_setting_wifi_set

NVD Source

Risk Analysis

The Tenda AC18 router contains a stack overflow vulnerability in its Wi-Fi settings configuration, which could lead to remote code execution. The 9.8 CVSS score indicates a critical risk to the device.

There is no public exploit known, and the vulnerability is not in the KEV catalog. It is remotely exploitable.

Recommended Action

Update the Tenda AC18 firmware to a version that addresses the stack overflow. Avoid exposing the router's management interface to the 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-2022-40854 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.