Vulnerability · Published Jun 8, 2026 · Assigned by VulDB

CVE-2026-11499Tenda HG7/HG9/HG10 formDOMAINBLK stack-based overflow

Critical 9.8

In plain English

A critical-severity stack buffer overflow in HG10 from Tenda. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 6.6% (higher than 94% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)6.6%top 6.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Public PoC

Official description

A vulnerability was determined in Tenda HG7, HG9 and HG10 300001138_en_xpon. This affects the function formDOMAINBLK of the file /boaform/formDOMAINBLK. Executing a manipulation of the argument blkDomain can lead to stack-based buffer overflow. The attack may be performed from remote.

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:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R

References

VDB-369119 | Tenda HG7/HG9/HG10 formDOMAINBLK stack-based overflow vdb-entry, technical-description
VDB-369119 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-11499 | CVE Analysis and Report third-party-advisory
Submit #834888 | Tenda HG10 HG7_HG9_HG10re_300001138_en_xpon stack-based buffer overflow third-party-advisory
Submit #888875 | Tenda HG10 HG7_HG9_HG10re_300001138 Denial of Service (Duplicate) third-party-advisory
https://github.com/ssaaaa1234/Tenda-HG10-formDOMAINBLK-stack-overflow-2 related
https://www.tenda.com.cn/ product