Is CVE-2022-40851 actively exploited?

No active exploitation of CVE-2022-40851 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-40851 be exploited remotely?

Yes. CVE-2022-40851 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-40851?

CVE-2022-40851 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-40851

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

9.8

CVSS v3.1

Official Description

Tenda AC15 V15.03.05.19 contained a stack overflow via the function fromAddressNat.

NVD Source

Risk Analysis

A stack overflow vulnerability in the Tenda AC15 router's address NAT function could allow for remote code execution. The 9.8 CVSS score highlights the critical nature of this vulnerability.

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

Recommended Action

Update the Tenda AC15 firmware to the latest version to patch the fromAddressNat function. Restrict access to the router's configuration interface.

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-2022-40851 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.