7.3High
CVE-2026-86300
A flaw has been found in Tenda AC9 15.03.05.14. This impacts the function R7WebsSecurityHandler of the component Web Management. This manipulation causes improper authentication. The attack may be initiated remotely. The exploit has been published and may be used.
What this means for your business
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 7.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- CVSS v4
- 5.5
- Weakness
- CWE-287
- Assigned by
- cna@vuldb.com
Dates
- Published
- 2026-09-07
- Last modified
- 2026-09-08
- Sources
- NVD
References
- https://github.com/limou89/somevul/blob/main/Tenda_AC9_fast_setting_wifi_set_Unauth_Password.md
- https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md
- https://vuldb.com/cve/CVE-2026-86300
- https://vuldb.com/submit/906606
- https://vuldb.com/submit/906607
- https://vuldb.com/submit/906608
- https://vuldb.com/vuln/399464
- https://vuldb.com/vuln/399464/cti
- https://www.tenda.com.cn/
- https://github.com/limou89/somevul/blob/main/Tenda_AC9_getProduct_Info_Disclosure.md