A vulnerability was found in Tenda HG10 300001138. (CVE-2026-86165)
Description
A buffer overflow vulnerability exists in the formURL function of the Tenda HG10 300001138 device, specifically in the /boaform/admin/formURL file. The flaw is triggered by manipulating the Keywd/urlFQDN argument and can be exploited remotely without authentication. The vulnerability has a high severity score of 9.8 and an exploit has been publicly disclosed, though no known active exploitation in the wild is reported. No patch or remediation information is currently available.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86165 is a remotely exploitable buffer overflow vulnerability in the formURL function of the Tenda HG10 300001138 device's /boaform/admin/formURL endpoint. The vulnerability arises from improper handling of the Keywd/urlFQDN argument, allowing an attacker to overflow a buffer. This vulnerability has a CVSS 3.1 base score of 9.8, indicating critical impact on confidentiality, integrity, and availability. Exploit code has been made public, increasing the risk of exploitation. No official patch or fix has been documented in the provided data.
Potential Impact
Successful exploitation can lead to complete compromise of the affected device, including unauthorized remote code execution, full system control, and potential denial of service. The vulnerability affects confidentiality, integrity, and availability with a CVSS score of 9.8. There are no reports of active exploitation in the wild at this time.
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 administrative interface from untrusted networks and monitor for attempts to exploit the /boaform/admin/formURL endpoint. Avoid exposing the device directly to the internet.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-rpvc-23w4-j8mm
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-86165"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9d762facd9273b49d8051f
Added to database: 09/06/2026, 14:18:23 UTC
Last enriched: 09/07/2026, 08:52:39 UTC
Last updated: 10/21/2026, 13:22:15 UTC
Views: 96
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