PT-2026-21409 · Tenda · Tenda Hg9 300001138

Linxi666 · Published 2026-02-22 · Updated 2026-02-27 · CVE-2026-2908

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Tenda HG9 300001138 (affected versions not specified)

Description A security issue exists in Tenda HG9 300001138 related to stack-based buffer overflow. The issue is located within the file /boaform/formLoopBack of the Loopback Detection Configuration Endpoint component. Manipulation of the Ethtype argument can trigger the overflow, and the attack can be executed remotely. The exploit has been publicly disclosed.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Buffer Overflow

Stack Overflow

Weakness Enumeration

CWE-119

CWE-121

Related Identifiers

CVE-2026-2908

Affected Products

Tenda Hg9 300001138

References · 14

• 🔥 https://github.com/QIU-DIE/cve-nneeww/issues/10 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-2908 · Security Note
• https://osv.dev/vulnerability/CVE-2026-2908 · Vendor Advisory
• https://t.me/cveNotify/152751 · Telegram Post
• https://twitter.com/CVEarity/status/2025571930758357173 · Twitter Post
• https://t.me/CVEtracker/45409 · Telegram Post
• https://reddit.com/r/BlizzardOfLInux/comments/1rbdtbz/tenda_hg9_router_new_cve · Reddit Post
• https://twitter.com/cracbot/status/2027337990553653343 · Twitter Post
• https://vuldb.com/?id.347217 · Note
• https://twitter.com/CVEnew/status/2025425442157871421 · Twitter Post
• https://tenda.com.cn · Note
• https://vuldb.com/?submit.755202 · Note
• https://twitter.com/CveTodo/status/2025399271155982668 · Twitter Post
• https://vuldb.com/?ctiid.347217 · Note