What is CVE-2026-86165?

CVE-2026-86165 is a critical-severity vulnerability in Tenda Hg10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2026-09-06.

How severe is CVE-2026-86165?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Tenda Hg10

CVE-2026-86165

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tenda Hg10 — versions 300001138

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-86165?: CVE-2026-86165 is a critical-severity vulnerability in Tenda Hg10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2026-09-06.
How severe is CVE-2026-86165?: Critical severity. CVSS v3 base score is 9.8 out of 10.