Totolink A8000RU 7.1cu.643_b20200521 Web Management Interface /cgi-bin/cstecgi.cgi setStaticDhcpRules 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 has been found in Totolink A8000RU 7.1cu.643_b20200521 and classified as critical. This affects the function setStaticDhcpRules of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. This manipulation of the argument enable causes os command injection. The identification of this vulnerability is CVE-2026-9408. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521. It has been declared as critical. Affected by this vulnerability is the function setStaticDhcpRules 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. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-9408. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue.

It is possible to download the exploit 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-202605-5106) and EUVD (EUVD-2026-31609). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

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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-2026-9408 (🔒)
GCVE (CVE): GCVE-0-2026-9408
GCVE (VulDB): GCVE-100-365389
EUVD: 🔒
CNNVD: CNNVD-202605-5106 - 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 #813443: Totolink A8000RU 7.1cu.643_b20200521 Command Injection (by LtzHuster)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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