Vulnerability · Published Aug 16, 2025 · Assigned by VulDB
CVE-2025-9088Tenda AC20 formSetVirtualSer save_virtualser_data stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in AC20 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.0%top 36.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was found in Tenda AC20 16.03.08.12. This vulnerability affects the function save_virtualser_data of the file /goform/formSetVirtualSer. The manipulation of the argument list leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · 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
References
- VDB-320356 | Tenda AC20 formSetVirtualSer save_virtualser_data stack-based overflow vdb-entry, technical-description
- VDB-320356 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #632038 | Tenda AC20 V16.03.08.12 Buffer Overflow third-party-advisory
- https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSer related
- https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSer#poc-python-exploit-script exploit
- https://www.tenda.com.cn/ product