Vulnerability · Published Oct 27, 2025 · Assigned by VulDB
CVE-2025-12211Tenda O3 setDmzInfo 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 0.8% (higher than 58% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.8%top 42.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A security flaw has been discovered in Tenda O3 1.0.0.10(2478). Affected by this issue is the function SetValue/GetValue of the file /goform/setDmzInfo. The manipulation of the argument dmzIP results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.
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-329881 | Tenda O3 setDmzInfo GetValue stack-based overflow vdb-entry, technical-description
- VDB-329881 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #673265 | Tenda O3 V1.0.0.10(2478) Buffer Overflow third-party-advisory
- https://github.com/noahze01/IoT-vulnerable/blob/main/Tenda/O3v2.0/setDmzInfo.md exploit
- https://www.tenda.com.cn/ product