Vulnerability · Published Jun 8, 2026 · Assigned by VulDB

CVE-2026-11557Tenda F451 Web Management Natlimit fromNatlimit stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in F451 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 58.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in Tenda F451 1.0.0.7/1.0.0.9. The affected element is the function fromNatlimit of the file /goform/Natlimit of the component Web Management Interface. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.

Affected products (as reported)

Vendor	Product	Versions
Tenda	F451	1.0.0.71.0.0.9

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-369167 | Tenda F451 Web Management Natlimit fromNatlimit stack-based overflow vdb-entry, technical-description
VDB-369167 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-11557 | CVE Analysis and Report third-party-advisory
Submit #836477 | Tenda Tenda F451 Wireless Router V1.0.0.7, V1.0.0.9 Stack-based Buffer Overflow third-party-advisory
https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/fromNatlimit/fromNatlimit.md exploit
https://www.tenda.com.cn/ product