Vulnerability · Published Sep 14, 2026 · Assigned by VulDB
CVE-2026-90688Tenda W20E HTTP formIPMacBindAdd stack-based overflow
Medium 6.5
In plain English
A medium-severity stack buffer overflow in W20E from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.7%top 46.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was identified in Tenda W20E 15.11.0.61068_1546_841_CN_TDC. This issue affects the function formIPMacBindAdd of the component HTTP Handler. Such manipulation of the argument IPMacBindRule leads to stack-based buffer overflow. It is possible to launch the attack remotely.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:X/RL:X/RC:R
References
- VDB-403221 | Tenda W20E HTTP formIPMacBindAdd stack-based overflow vdb-entry, technical-description
- VDB-403221 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-90688 | CVE Analysis and Report third-party-advisory
- Submit #914958 | Tenda Router US_W20EV4.0br_V15.11.0.61068_1546_841_CN_TDC Memory Corruption third-party-advisory
- https://github.com/Amalll-Sec/router-vulnerability-research/blob/main/advisories/Tenda/W20E/formIPMacBindAdd/README.md related
- https://www.tenda.com.cn/ product