Is CVE-2022-40867 actively exploited?

No active exploitation of CVE-2022-40867 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-40867 be exploited remotely?

Yes. CVE-2022-40867 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-40867?

CVE-2022-40867 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-40867

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

9.8

CVSS v3.1

Official Description

Tenda W20E router V15.11.0.6 (US_W20EV4.0br_V15.11.0.6(1068_1546_841)_CN_TDC) contains a stack overflow vulnerability in the function formIPMacBindDel with the request /goform/delIpMacBind/

NVD Source

Risk Analysis

A stack overflow vulnerability exists in the Tenda W20E router's IP/MAC binding deletion function, potentially allowing remote code execution. The critical 9.8 CVSS score underscores the high risk of this flaw.

No public exploit is known, and the vulnerability is not in the KEV catalog. The flaw is remotely exploitable.

Recommended Action

Upgrade the Tenda W20E firmware to the latest available version to address the vulnerability in formIPMacBindDel. Limit administrative access to the device.

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-2022-40867 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.