Login Request a demo
High severity · published Nov 10, 2025
CVE-2025-63835
A stack-based buffer overflow vulnerability was discovered in Tenda AC18 v15.03.05.05_multi
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
A stack-based buffer overflow vulnerability was discovered in Tenda AC18 v15.03.05.05_multi. The vulnerability exists in the guestSsid parameter of the /goform/WifiGuestSet interface. Remote attackers can exploit this vulnerability by sending oversized data to the guestSsid parameter, leading to denial of service (device crash) or potential remote code execution.
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)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Ac18 Firmware · Tenda
15.03.05.05 · source: NVD
Affected product
AF
Ac18 Firmware
Tenda
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-63835
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-63835
Exploit
https://github.com/babraink/cve_report/blob/main/cve_report/tenda/tendaAC18/2_wifiguest_guestssid_overflow/README.md
More from Ac18 Firmware
10.0
CVE-2026-82695
Tenda AC18 Telnet telnet missing authentication
9.8
CVE-2026-31255
A command injection vulnerability exists in Tenda AC18 V15.03.05.05_multi
9.8
CVE-2025-5606
Tenda AC18 SetIPTVCfg formSetIptv command injection
9.8
CVE-2024-57583
Tenda AC18 V15.03.05.19 was discovered to contain a command injection vulnerability via the usbName parameter in the formSetSambaConf function
9.8
CVE-2024-57582
Tenda AC18 V15.03.05.19 was discovered to contain a stack overflow via the startIP parameter in the formSetPPTPServer function