Buffer overflow in Tenda Ac18
CVE-2025-63835
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (49.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Tenda Ac18
- Tenda Ac18 Firmware — versions 15.03.05.05
Weakness classification (CWE)
References
- github.com/babraink/cve_report/blob/main/cve_report/tenda/tendaAC18/2_wifiguest… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63835?
- CVE-2025-63835 is a high-severity vulnerability in Tenda Ac18, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2025-11-10.
- How severe is CVE-2025-63835?
- High severity. CVSS v3 base score is 8.8 out of 10.