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CVE

CWE

Training

CVE-2026-9435

Published: May 25, 2026

Modified: May 26, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

Description

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setQosCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument enable results in os command injection. Remote exploitation of the attack is possible. The exploit is now public and may be used.

Vendor	Product	Versions
Totolink	A8000RU	affected `7.1cu.643_b20200521`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

VDB-365416 | Totolink A8000RU Web Management cstecgi.cgi setQosCfg os command injection

vdb-entry

technical-description

VDB-365416 | CTI Indicators (IOB, IOC, TTP, IOA)

signature

permissions-required

Submit #813908 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

third-party-advisory

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_356/README.md

exploit

https://www.totolink.net/

product

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