CRITICAL: CVE-2026-7140 (CVSS 9.8) — multiple products

CVE: CVE-2026-7140

CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

_See vendor advisory_

Summary

A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument HTTP leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.

Verified Sources

References

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_315/README.md
https://vuldb.com/submit/801110
https://vuldb.com/vuln/359739
https://vuldb.com/vuln/359739/cti
https://www.totolink.net/

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.

#critical