Is CVE-2023-40847 actively exploited?

No active exploitation of CVE-2023-40847 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-40847 be exploited remotely?

Yes. CVE-2023-40847 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-40847?

CVE-2023-40847 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-40847

CRITICAL

CVE-2023-40847

CWE-787Published: August 30, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Tenda AC6 US_AC6V1.0BR_V15.03.05.16_multi_TD01.bin is vulnerable to Buffer Overflow via the function "initIpAddrInfo." In the function, it reads in a user-provided parameter, and the variable is passed to the function without any length check.

NVD Source

Risk Analysis

This vulnerability is a buffer overflow in the Tenda AC6 firmware caused by a lack of length checks on user-provided parameters. With a CVSS score of 9.8, it is considered critical due to the potential for full system compromise.

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

Recommended Action

Users should update the Tenda AC6 firmware to a version that addresses this buffer overflow vulnerability.

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-2023-40847 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.