Is CVE-2023-40898 actively exploited?

No active exploitation of CVE-2023-40898 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-40898 be exploited remotely?

Yes. CVE-2023-40898 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-40898?

CVE-2023-40898 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-40898

CRITICAL

CVE-2023-40898

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 timeZone at /goform/SetSysTimeCfg.

NVD Source

Risk Analysis

The Tenda AC8 firmware is susceptible to a stack overflow via the timeZone parameter, which can be triggered remotely. This critical vulnerability is rated 9.8 on the CVSS scale, indicating a high risk of full system compromise.

There is no public exploit circulating for this vulnerability, and it is not tracked in the CISA KEV. It remains remotely exploitable by unauthenticated attackers.

Recommended Action

Update the device firmware to the latest version. Disable remote management features to prevent unauthorized access to the 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-2023-40898 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.