Totolink A8000RU 7.1cu.643_b20200521 CGI /cgi-bin/cstecgi.cgi setUrlFilterRules enable os command injection

Summaryinfo

A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521 and classified as critical. This issue affects the function setUrlFilterRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument enable causes os command injection. This vulnerability appears as CVE-2026-7203. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Totolink A8000RU 7.1cu.643_b20200521. Affected by this vulnerability is the function setUrlFilterRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. 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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-7203. 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. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

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.

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
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/27/2026 Advisory disclosed
04/27/2026 +0 days VulDB entry created
04/27/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2026-7203 (🔒)
GCVE (CVE): GCVE-0-2026-7203
GCVE (VulDB): GCVE-100-359803
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/27/2026 16:01
Changes: 04/27/2026 16:01 (57)
Complete: 🔍
Submitter: LtzHust
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #801528: Totolink A8000RU 7.1cu.643_b20200521 Command Injection (by LtzHust)

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!