CVE-2026-19790: Stack-based Buffer Overflow in Tenda G0
A vulnerability was identified in Tenda G0 up to 20260625. This issue affects the function formSetPortMirror of the file /goform/module of the component httpd Web Management Interface. Such manipulation of the argument portMirrorMirroredPorts leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.
AI Analysis
Technical Summary
CVE-2026-19790 is a stack-based buffer overflow vulnerability in the Tenda G0 device's httpd Web Management Interface, specifically in the formSetPortMirror function within the /goform/module component. The vulnerability arises from improper handling of the portMirrorMirroredPorts argument, allowing remote attackers to cause a buffer overflow. Exploitation requires low privileges and no user interaction. Public exploit code exists, but no known active exploitation in the wild has been reported. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability can lead to remote code execution or denial of service on the affected device, compromising confidentiality, integrity, and availability. The vulnerability can be triggered remotely with low attack complexity and no user interaction, making it a significant risk if exploited.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the device's web management interface to trusted networks and users. Monitor vendor communications for updates regarding patches or mitigations.
CVE-2026-19790: Stack-based Buffer Overflow in Tenda G0
Description
A vulnerability was identified in Tenda G0 up to 20260625. This issue affects the function formSetPortMirror of the file /goform/module of the component httpd Web Management Interface. Such manipulation of the argument portMirrorMirroredPorts leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.
CVSS v4.0
Score 8.7high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19790 is a stack-based buffer overflow vulnerability in the Tenda G0 device's httpd Web Management Interface, specifically in the formSetPortMirror function within the /goform/module component. The vulnerability arises from improper handling of the portMirrorMirroredPorts argument, allowing remote attackers to cause a buffer overflow. Exploitation requires low privileges and no user interaction. Public exploit code exists, but no known active exploitation in the wild has been reported. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability can lead to remote code execution or denial of service on the affected device, compromising confidentiality, integrity, and availability. The vulnerability can be triggered remotely with low attack complexity and no user interaction, making it a significant risk if exploited.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the device's web management interface to trusted networks and users. Monitor vendor communications for updates regarding patches or mitigations.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-hrjq-f2xj-8982
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-19790"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7f440cbf8831d5395fb6d4
Added to database: 08/14/2026, 16:36:28 UTC
Last enriched: 08/14/2026, 16:58:54 UTC
Last updated: 09/26/2026, 14:13:24 UTC
Views: 52
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