CVE-2026-7140

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.

CVSS 4.0

8.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

CVSS 3.1

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

EPSS

1.8% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-26)

CWEs

CWE-77, CWE-78

Published

2026-04-27

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

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/

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