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CVE-2026-7243

CRITICAL
9.8NVD

Summary

generated automatically from NVD data

Totolink A8000RU firmware 7.1cu.643_b20200521 contains an OS command injection flaw in the setRadvdCfg function of /cgi-bin/cstecgi.cgi, part of the CGI Handler component. Manipulating the maxRtrAdvInterval argument lets an attacker inject operating system commands, and the attack can be launched remotely. The NVD description states that a public exploit is available, and the flaw is rated 9.8 (CRITICAL) under CVSS v3.1.

NVD description

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setRadvdCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument maxRtrAdvInterval leads to os command injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

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EPSS · FIRST.org

3.3%probability of exploitation in the next 30 days

Higher than 88% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-19, recomputed daily by FIRST.org.

CVSS v3.1 Score

9.8
/ 10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Information

Published
28 avr. 2026
Updated
17 juin 2026
Status
Deferred
Source
cna@vuldb.com

Weaknesses (CWE)

CWE-77CWE-78

Similar CVEs

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