Totolink A8000RU 7.1cu.643_b20200521 Web Management Interface /cgi-bin/cstecgi.cgi setRemoteCfg enable os command injection

CVSS Meta Temp Score
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Totolink A8000RU 7.1cu.643_b20200521. Affected by this vulnerability is the function setRemoteCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument enable leads to os command injection. This vulnerability is uniquely identified as CVE-2026-9406. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521 and classified as critical. This issue affects the function setRemoteCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument enable with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-9406. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The exploit is available at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202605-5108) and EUVD (EUVD-2026-31606). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.8
VulDB Temp Score: 8.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/24/2026 Advisory disclosed
05/24/2026 +0 days VulDB entry created
05/26/2026 +2 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2026-9406 (🔒)
GCVE (CVE): GCVE-0-2026-9406
GCVE (VulDB): GCVE-100-365387
EUVD: 🔒
CNNVD: CNNVD-202605-5108 - TOTOLINK A8000RU 操作系统命令注入漏洞

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/24/2026 08:32
Updated: 05/26/2026 17:37
Changes: 05/24/2026 08:32 (57), 05/25/2026 05:03 (1), 05/26/2026 17:37 (6)
Complete: 🔍
Submitter: LtzHuster
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #813441: Totolink A8000RU 7.1cu.643_b20200521 Command Injection (by LtzHuster)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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