CVE-2026-9455

A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function UploadOpenVpnCert of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument FileName leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the 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

1.91% chance of exploitation in the next 30 days, 78th percentile

Published

2026-05-25

Updated

2026-05-26

Proof-of-concept exploits (1)

• Litengzheng/vuldb_new2/blob/main/A8000RU/vul_342/README.md

References

• CVE Record
• NVD entry

Related

• CVE-2026-9454
• CVE-2026-9456
• CVE-2026-9453
• CVE-2026-9457
• CVE-2026-9452
• CVE-2026-9458