Is CVE-2026-5978 actively exploited?

No active exploitation of CVE-2026-5978 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-5978 be exploited remotely?

Yes. CVE-2026-5978 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-5978?

CVE-2026-5978 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-5978

CWE-77Published: April 9, 2026· Updated: Apr 13, 2026

9.8

CVSS v3.1

EPSS:0.89%probability of exploitation in 30 daysPercentile:75.6th

Official Description

A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected is the function setWiFiAclRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument mode leads to os command injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.

NVD Source

Technical Analysis

CVE-2026-5978 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.