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Description

A security vulnerability has been detected in Tenda HG9 300001138. Affected by this issue is some unknown functionality of the file /boaform/formLoopBack of the component Loopback Detection Configuration Endpoint. Such manipulation of the argument Ethtype leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.

PUBLISHED Reserved 2026-02-20 | Published 2026-02-22 | Updated 2026-02-23 | Assigner VulDB




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

300001138
affected

Timeline

2026-02-20:Advisory disclosed
2026-02-20:VulDB entry created
2026-02-20:VulDB entry last update

Credits

LINXI666 (VulDB User) reporter

References

vuldb.com/?id.347217 (VDB-347217 | Tenda HG9 Loopback Detection Configuration Endpoint formLoopBack stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.347217 (VDB-347217 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.755202 (Submit #755202 | Tenda HG9 V300001138 Stack-based Buffer Overflow) third-party-advisory

github.com/QIU-DIE/cve-nneeww/issues/10 exploit issue-tracking

www.tenda.com.cn/ product

cve.org (CVE-2026-2908)

nvd.nist.gov (CVE-2026-2908)

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