High severity · published Sep 23, 2025
CVE-2025-57638
Buffer overflow vulnerability in Tenda AC9 1.0 via the user supplied sys.vendor configuration value
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
Buffer overflow vulnerability in Tenda AC9 1.0 via the user supplied sys.vendor configuration value.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Ac9 Firmware · Tenda
1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-57638
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-57638
Exploit
https://github.com/glkfc/IoT-Vulnerability/blob/main/Tenda/tenda1.md
More from Ac9 Firmware
9.8
CVE-2018-14558
Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability
9.8
CVE-2025-45042
Tenda AC9 v15.03.05.14 was discovered to contain a command injection vulnerability via the Telnet function
9.8
CVE-2025-44877
Tenda AC9 V15.03.06.42_multi was found to contain a command injection vulnerability in the formSetSambaConf function via the usbname parameter
9.8
CVE-2025-44872
Tenda AC9 V15.03.06.42_multi was found to contain a command injection vulnerability in the formsetUsbUnload function via the deviceName parameter
9.8
CVE-2025-45429
In the Tenda ac9 v1.0 router with firmware V15.03.05.14_multi, there is a stack overflow vulnerability in /goform/WifiWpsStart, which may lead to remote arbitrary code execution