Is CVE-2026-4493 actively exploited?

No active exploitation of CVE-2026-4493 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4493 be exploited remotely?

Yes. CVE-2026-4493 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4493?

CVE-2026-4493 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2026-4493

CWE-119Published: March 20, 2026· Updated: Mar 24, 2026

8.8

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:14.2th

Official Description

A vulnerability was determined in Tenda A18 Pro 02.03.02.28. The impacted element is the function sub_423B50 of the file /goform/setMacFilterCfg of the component MAC Filtering Configuration Endpoint. Executing a manipulation of the argument deviceList can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.

NVD Source

Technical Analysis

CVE-2026-4493 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 8.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.