Vulnerability · Published Apr 6, 2026 · Assigned by VulDB
CVE-2026-5685Tenda CX12L addressNat fromAddressNat stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in CX12L 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)8.8High
Exploit odds (30 days)0.7%top 46.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was identified in Tenda CX12L 16.03.53.12. This affects the function fromAddressNat of the file /goform/addressNat. The manipulation of the argument page leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might 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-355512 | Tenda CX12L addressNat fromAddressNat stack-based overflow vdb-entry, technical-description
- VDB-355512 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #792782 | Tenda CX12L V16.03.53.12 Stack-based Buffer Overflow third-party-advisory
- https://github.com/cve-a/lvdan/issues/3 exploit, issue-tracking
- https://www.tenda.com.cn/ product