CVE-2025-9090
A vulnerability was identified in Tenda AC20 16.03.08.12.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 16.7%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
A vulnerability was identified in Tenda AC20 16.03.08.12. Affected is the function websFormDefine of the file /goform/telnet of the component Telnet Service. The manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
- CVSS 4.0
- 2.1 LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 16.65% probability · 97th percentile
- Public exploits
- 1 in Exploit-DB · first 18 August 2025
- CISA KEV
- Not listed
- Weakness
- CWE-74, CWE-77
- Affected
- tenda/ac20 firmware
- Source
- cna@vuldb.com
EPSS moved from 16.7% on 17 October 2026 to 16.7% on 1 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://github.com/ZZ2266/.github.io/blob/main/AC20/telnet/readme.mdExploit, Third Party Advisory
- https://github.com/ZZ2266/.github.io/blob/main/AC20/telnet/readme.md#poc-exploit-stepsExploit, Third Party Advisory
- https://vuldb.com/?ctiid.320358Permissions Required, VDB Entry
- https://vuldb.com/?id.320358Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.632232Third Party Advisory, VDB Entry
- https://www.tenda.com.cn/Product
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.