High severity · published Jun 7, 2025
CVE-2025-5839
A vulnerability, which was classified as critical, has been found in Tenda AC9 15.03.02.13
8.8
CVSS
1%
EPSS
No
On KEV
Description
A vulnerability, which was classified as critical, has been found in Tenda AC9 15.03.02.13. Affected by this issue is the function fromadvsetlanip of the file /goform/AdvSetLanip of the component POST Request Handler. The manipulation of the argument lanMask leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Ac9 Firmware · Tenda
15.03.2.13 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-5839
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-5839
Exploit
https://candle-throne-f75.notion.site/Tenda-AC9-fromadvsetlanip-20adf0aa11858027b7c3c2f4e44bb867
Permissions Required
https://vuldb.com/?ctiid.311582
Third Party Advisory
https://vuldb.com/?id.311582
Third Party Advisory
https://vuldb.com/?submit.591369
Product
https://www.tenda.com.cn/
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