Vulnerability · Published Oct 27, 2025 · Assigned by VulDB
CVE-2025-12209Tenda O3 setDhcpConfig GetValue stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in O3 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 64% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.0%top 36.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was determined in Tenda O3 1.0.0.10(2478). Affected is the function SetValue/GetValue of the file /goform/setDhcpConfig. Executing a manipulation of the argument dhcpEn can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.
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-329879 | Tenda O3 setDhcpConfig GetValue stack-based overflow vdb-entry, technical-description
- VDB-329879 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #673263 | Tenda O3 V1.0.0.10(2478) Buffer Overflow third-party-advisory
- https://github.com/noahze01/IoT-vulnerable/blob/main/Tenda/O3v2.0/setDhcpConfig.md exploit
- https://www.tenda.com.cn/ product