Vulnerability · Published Jun 8, 2026 · Assigned by VulDB

CVE-2026-11553Tenda HG7/HG9/HG10 formPPPEdit stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in HG10 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). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 58.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Public PoC

Official description

A vulnerability was found in Tenda HG7, HG9 and HG10 300001138_en_xpon. This affects the function formPPPEdit of the file /boaform/formPPPEdit. The manipulation of the argument encodename results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.

Affected products (as reported)

Vendor	Product	Versions
Tenda	HG7	300001138_en_xpon
Tenda	HG9	300001138_en_xpon
Tenda	HG10	300001138_en_xpon

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-369163 | Tenda HG7/HG9/HG10 formPPPEdit stack-based overflow vdb-entry, technical-description
VDB-369163 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-11553 | CVE Analysis and Report third-party-advisory
Submit #836778 | Tenda HG10 HG7_HG9_HG10re_300001138_en_xpon stack-based buffer overflow third-party-advisory
https://github.com/xiezhihua-1127/Tenda-Stack-Overflow.git related
https://github.com/xiezhihua-1127/Tenda-Stack-Overflow/blob/main/report.md exploit
https://www.tenda.com.cn/ product