CVE-2026-9455 | THREATINT

Description

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.

PUBLISHED Reserved 2026-05-24 | Published 2026-05-25 | Updated 2026-05-26 | Assigner VulDB

CRITICAL: 9.3CVSS: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

CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

CRITICAL: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

10.0AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

OS Command Injection

Command Injection

Product status

7.1cu.643_b20200521

affected

Timeline

2026-05-24:	Advisory disclosed
2026-05-24:	VulDB entry created
2026-05-24:	VulDB entry last update

Credits

LtzHust (VulDB User) reporter

References

vuldb.com/vuln/365436 (VDB-365436 | Totolink A8000RU Web Management cstecgi.cgi UploadOpenVpnCert os command injection) vdb-entry technical-description

vuldb.com/vuln/365436/cti (VDB-365436 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/813449 (Submit #813449 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection) third-party-advisory

github.com/...vuldb_new2/blob/main/A8000RU/vul_342/README.md exploit

www.totolink.net/ product

cve.org (CVE-2026-9455)

nvd.nist.gov (CVE-2026-9455)

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