Read the docs
TI-2026-02502 Aliases CVE-2026-2909GHSA-8pgv-26pm-rgm8

Tenda HG9 Diagnostic Ping Endpoint formPing stack-based overflow

Priority HIGH 79CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A vulnerability was detected in Tenda HG9 300001138. This affects an unknown part of the file /boaform/formPing of the component Diagnostic Ping Endpoint. Performing a manipulation of the argument pingAddr results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00646 51st percentileScored 2026-11-08
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TendaHG9300001138—No fix listedCNA
  • HG9 VendorTenda Affected 300001138 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tenda:hg9_firmware:300001138:*:*:*:*:*:*:*300001138VulnerableTenda
cpe:2.3:h:tenda:hg9:-:*:*:*:*:*:*:*not specified by NVDRunning onTenda
  • cpe:2.3:o:tenda:hg9_firmware:300001138:*:*:*:*:*:*:* Versions 300001138 Vulnerable ·Tenda
  • cpe:2.3:h:tenda:hg9:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tenda

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-2909
  2. 2026-10-03 Alias added: GHSA-8pgv-26pm-rgm8

References

Exploit 1

Other 1

  • TI-2026-02501 Tenda HG9 Loopback Detection Configuration Endpoint formLoopBack stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-02503 Tenda HG9 formPing6 stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-02500 Tenda HG9 GPON Configuration Endpoint formgponConf stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-02499 Tenda HG9 Samba Configuration Endpoint formSamba stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-02498 Tenda HG9 Wireless Configuration Endpoint formWlanSetup stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2022-12351 Tenda ONT GPON AC1200 Dual band WiFi HG9 v1.0.1 is vulnerable to Command Injection via the Ping function. CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences