CVE-2026-86165: Buffer Overflow in Tenda HG10
Description
CVE-2026-86165 is a critical buffer overflow vulnerability in the Tenda HG10 device, specifically in the formURL function of the /boaform/admin/formURL file. The vulnerability is triggered by manipulating the Keywd/urlFQDN argument remotely. An exploit has been publicly disclosed, increasing the risk of exploitation.
CVSS v4.0
Score 9.3critical
Affected software
Tenda
HG10
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Tenda HG10 device (model 300001138) and involves a buffer overflow in the formURL function located in /boaform/admin/formURL. Remote attackers can trigger the overflow by manipulating the Keywd/urlFQDN argument. The vulnerability has a CVSS 4.0 score of 9.3, indicating critical severity. Exploit code has been publicly released, but there is no information about active exploitation in the wild. No patch or remediation details are provided in the available data.
Potential Impact
Successful exploitation of this buffer overflow could allow remote attackers to cause memory corruption, potentially leading to denial of service or arbitrary code execution on the affected device. Given the critical CVSS score and remote attack vector with no required privileges or user interaction, the impact is severe.
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 affected device's management interface from untrusted networks to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-09-05T10:31:59.598Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9ce003acd9273b4927b968
Added to database: 09/06/2026, 03:37:39 UTC
Last enriched: 09/15/2026, 01:10:39 UTC
Last updated: 10/21/2026, 13:22:15 UTC
Views: 102
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