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CWE

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CVE-2026-9387

Published: May 24, 2026

Modified: May 26, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

Description

A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument resetFlags results in os command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

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-365350 | Totolink A8000RU Web Management cstecgi.cgi setUpgradeFW os command injection

vdb-entry

technical-description

VDB-365350 | CTI Indicators (IOB, IOC, TTP, IOA)

signature

permissions-required

Submit #813433 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

third-party-advisory

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_334/README.md

exploit

https://www.totolink.net/

product

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