Immediate
Before a patch is released, reduce exposure immediately and only allow trusted sources to reach the affected service.
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CVE-2026-7683
MEDIUM
Command Injection
⚠ Unpatched · Zero-day◉ PoC 公开
Lifecycle 4/7
Edimax BR-6428nC up to 1.16 Web Interface /goform/setWAN pppUserName/pptpUserName command injection
LIFECYCLE
5.7
CVSS
Vulnerability Description
A vulnerability was found in Edimax BR-6428nC up to 1.16 and classified as critical. Affected by this issue is some unknown processing of the file /goform/setWAN of the component Web Interface. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Root Cause Analysis
The manipulation of the argument pppUserName/pptpUserName with an unknown input leads to a unknown weakness. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
Impact: Impacted is confidentiality, integrity, and availability.
Exploit: The exploit is available at tzh00203.notion.site. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.
Countermeasure: There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Impact: Impacted is confidentiality, integrity, and availability.
Exploit: The exploit is available at tzh00203.notion.site. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.
Countermeasure: There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Validation (PoC/EXP) - Looking for Contributors
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Public validation traces already exist. Community contributors can extend them with richer reproduction content.
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Mitigation Plan - Sorted by Priority
High
Enable extra access controls, WAF/ACL, or reverse-proxy rules for BR-6428nC.
High
Use logs and IOCs to hunt through production traffic and confirm whether exploitation traces already exist.
Medium
Keep this issue on the watch list and follow vendor advisories, rollback notices, and new variants.
Vulnerability Lifecycle - Click each stage to inspect details
The issue has entered HackerTop VulnFeed and is now being tracked by the community.
The vulnerability has been synchronized into the platform and entered the visible triage flow.
Initial impact validation is complete based on current disclosure, technical details, and public intelligence.
A public proof path already exists for reference.
No in-the-wild exploitation has been confirmed yet, but monitoring should continue.
No vendor patch is available yet. Apply temporary mitigations first.
Reduce exposure, restrict access, and inspect logs until a permanent fix is available.
5.7
CVSS
Temp Score
5.7
MEDIUM
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metric Details
Attack Vector
Attack Vector
Network
Attack Complexity
Attack Complexity
Low
Privileges Required
Privileges Required
None
User Interaction
User Interaction
None
Confidentiality Impact
Confidentiality Impact
High
Integrity Impact
Integrity Impact
High
Availability Impact
Availability Impact
High
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CVE-2026-7683 · CVSS 5.7 · Active Threat
