Totolink A8000RU 7.1cu.643_b20200521 CGI /cgi-bin/cstecgi.cgi setWiFiAclRules mode os command injection
Summary
A vulnerability categorized as critical has been discovered in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setWiFiAclRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument mode leads to os command injection.
This vulnerability is listed as CVE-2026-7139. The attack may be performed from remote. In addition, an exploit is available.
Details
A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521. It has been rated as critical. Affected by this issue is the function setWiFiAclRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument mode 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.
The advisory is available at github.com. This vulnerability is handled as CVE-2026-7139. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.
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.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Product
Vendor
Name
Version
License
Website
- Vendor: https://www.totolink.net/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.8VulDB Meta Temp Score: 8.9
VulDB Base Score: 9.8
VulDB Temp Score: 8.9
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Os command injectionCWE: 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-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
04/26/2026 Advisory disclosed04/26/2026 VulDB entry created
04/26/2026 VulDB entry last update
Sources
Vendor: totolink.netAdvisory: github.com
Status: Not defined
CVE: CVE-2026-7139 (🔒)
GCVE (CVE): GCVE-0-2026-7139
GCVE (VulDB): GCVE-100-359738
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 04/26/2026 21:35Changes: 04/26/2026 21:35 (57)
Complete: 🔍
Submitter: LtzHuster2
Cache ID: 216::103
Submit
Accepted
- Submit #801106: Totolink A8000RU 7.1cu.643_b20200521 Command Injection (by LtzHuster2)
If you want to get best quality of vulnerability data, you may have to visit VulDB.
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