Is CVE-2023-40893 actively exploited?

No active exploitation of CVE-2023-40893 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-40893 be exploited remotely?

Yes. CVE-2023-40893 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-40893?

CVE-2023-40893 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-40893

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 time at /goform/PowerSaveSet.

NVD Source

Risk Analysis

A stack overflow vulnerability in the Tenda AC8 firmware can be triggered via the time parameter. This critical flaw allows unauthenticated remote code execution and is rated 9.8 on the CVSS scale.

No public exploit is known for this vulnerability, and it is not in the CISA KEV. The vulnerability is remotely exploitable.

Recommended Action

Upgrade the Tenda AC8 firmware to the latest available version. Disable remote management to reduce the attack surface.

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-2023-40893 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.