CVE-2026-71904: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in DrayTek Corporation VigorAP 918R
Multiple DrayTek VigorAP models contain a command injection vulnerability in the tr069TestInform function. The vulnerability is caused by insufficient filtering of dangerous characters before the event_code field is concatenated into a system command. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.
AI Analysis
Technical Summary
This vulnerability affects multiple DrayTek VigorAP models, specifically the VigorAP 918R, where the tr069TestInform function improperly neutralizes special elements before concatenating the event_code field into a system command. This flaw enables a remote attacker with administrative access to the web management interface to execute arbitrary commands with root privileges on the device. The CVSS 4.0 base score is 8.6, indicating high severity. No vendor advisory or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation allows an attacker with administrative credentials to execute arbitrary OS commands with root privileges on the affected device. This can lead to full compromise of the device, potentially impacting network security and device integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict administrative access to trusted personnel only and consider additional network-level protections to limit exposure of the device's management interface.
CVE-2026-71904: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in DrayTek Corporation VigorAP 918R
Description
Multiple DrayTek VigorAP models contain a command injection vulnerability in the tr069TestInform function. The vulnerability is caused by insufficient filtering of dangerous characters before the event_code field is concatenated into a system command. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.
CVSS v4.0
Score 8.6high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects multiple DrayTek VigorAP models, specifically the VigorAP 918R, where the tr069TestInform function improperly neutralizes special elements before concatenating the event_code field into a system command. This flaw enables a remote attacker with administrative access to the web management interface to execute arbitrary commands with root privileges on the device. The CVSS 4.0 base score is 8.6, indicating high severity. No vendor advisory or patch information is currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation allows an attacker with administrative credentials to execute arbitrary OS commands with root privileges on the affected device. This can lead to full compromise of the device, potentially impacting network security and device integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict administrative access to trusted personnel only and consider additional network-level protections to limit exposure of the device's management interface.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-08T16:37:44.517Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8c7de7acd9273b49e1b320
Added to database: 08/24/2026, 17:22:47 UTC
Last enriched: 08/24/2026, 17:53:54 UTC
Last updated: 08/24/2026, 20:08:05 UTC
Views: 2
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