Buffer overflow in Tenda Ac8
CVE-2025-11120
A weakness has been identified in Tenda AC8 16.03.34.06. The affected element is the function formSetServerConfig of the file /goform/SetServerConfig. Executing manipulation can lead to buffer overflow. It is possible to launch the attack…
Vulnerability class: Buffer Overflow
EPSS: 0.004 (60.1th percentile) — read the EPSS interpretation.
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/E:P/RL:X/RC:R.
Affected products
- Tenda Ac8 — versions 16.03.34.06
Weakness classification (CWE)
Public proof-of-concept exploits
References
- VDB-326201 | Tenda AC8 SetServerConfig formSetServerConfig buffer overflow (vdb-entry, technical-description)
- VDB-326201 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #664065 | Shenzhen Tenda Technology Co., Ltd. Tenda AC8v4 Router Tenda AC8v4 (V16.03.34.06) Buffer Overflow (third-party-advisory)
- github.com/alc9700jmo/CVE/issues/19 (exploit, issue-tracking)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2025-11120?
- CVE-2025-11120 is a high-severity vulnerability in Tenda Ac8, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2025-09-28.
- How severe is CVE-2025-11120?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-11120 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.