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8.9
CVE-2026-86165: Tenda HG10 can be crashed by crafted web request
CVE-2026-86165 · published 1 month ago
Summary
The web management page on Tenda HG10 routers has a flaw that lets a specially formed request overwrite memory, potentially causing the device to stop working. Because the attack can be launched over the network, an unauthorised user could disrupt your internet connection. Apply the latest firmware update from Tenda and restrict remote access to the router's admin interface.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| tenda | hg10 | 300001138 |
Original advisory text
Tenda HG10 formURL buffer overflow
A vulnerability was found in Tenda HG10 300001138. This vulnerability affects the function formURL of the file /boaform/admin/formURL. Performing a manipulation of the argument Keywd/urlFQDN results in buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used.
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically
- Gives an attacker full control
Severity
8.9
High
Type
CWE-120Classic Buffer Overflow
CWE-119Buffer Overflow
Timeline
Published6 Sep 2026
Updated7 Oct 2026
First seen6 Sep 2026
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