CVE-2026-7156

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument HTTP results in os command injection. The attack may be launched remotely. The exploit is now public and may be used.

CVSS v4.0

8.9 HIGHCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

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

CVSS v2.0

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

1.79% chance of exploitation in the next 30 days, 77th percentile

Published

2026-04-27

Updated

2026-04-28

Proof-of-concept exploits (1)

• Litengzheng/vuldb_new2/blob/main/A8000RU/vul_320/README.md

References

• CVE Record
• NVD entry

Related

• CVE-2026-71557
• CVE-2026-7157
• CVE-2026-71554
• CVE-2026-7158
• CVE-2026-7155
• CVE-2026-7159