Is CVE-2026-9458 actively exploited?

No active exploitation of CVE-2026-9458 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-9458 be exploited remotely?

Yes. CVE-2026-9458 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-9458?

CVE-2026-9458 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-9458

CWE-77Published: May 25, 2026· Updated: May 26, 2026

9.8

CVSS v3.1

EPSS:0.89%probability of exploitation in 30 daysPercentile:75.8th

Official Description

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument enabled leads to os command injection. The attack may be performed from remote. The exploit is publicly available and might be used.

NVD Source

Technical Analysis

CVE-2026-9458 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.