Cyber Posture

CVE-2026-2910

HighPublic PoC

Published: 22 February 2026

Published
22 February 2026
Modified
23 February 2026
KEV Added
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Patch
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CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0015 35.7th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Description

A flaw has been found in Tenda HG9 300001138. This vulnerability affects unknown code of the file /boaform/formPing6. Executing a manipulation of the argument pingAddr can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit…

more

has been published and may be used.

Mitigating Controls (NIST 800-53 r5)AI

SI-2 Flaw Remediation good match
prevent

Directly remediates the stack-based buffer overflow flaw in Tenda HG9 firmware version 300001138 through timely patching or updates.

SI-10 Information Input Validation good match
prevent

Requires validation of the pingAddr argument in /boaform/formPing6 to block malformed inputs causing the buffer overflow.

SI-16 Memory Protection good match
prevent

Provides memory protections like stack canaries and ASLR to detect and prevent exploitation of the stack-based buffer overflow.

Security SummaryAI

CVE-2026-2910 is a stack-based buffer overflow vulnerability in the Tenda HG9 router running firmware version 300001138. The flaw resides in unknown code within the /boaform/formPing6 file, where manipulation of the pingAddr argument triggers the overflow. It was published on 2026-02-22 and carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), linked to CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow).

The vulnerability can be exploited remotely by an attacker with low privileges (PR:L), requiring low attack complexity and no user interaction. Successful exploitation grants high-impact access to confidentiality, integrity, and availability, potentially allowing arbitrary code execution on the affected device.

Advisories and additional details are available via references including a GitHub issue at https://github.com/QIU-DIE/cve-nneeww/issues/12, VulDB entries at https://vuldb.com/?ctiid.347219, https://vuldb.com/?id.347219, and https://vuldb.com/?submit.755212, and the vendor site at https://www.tenda.com.cn/. An exploit has been publicly disclosed and may be in use.

Details

CWE(s)
CWE-119CWE-121

Affected Products

tenda
hg9 firmware
300001138

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
Why these techniques?

Stack-based buffer overflow in router's web management interface (/boaform/formPing6) enables remote exploitation of a public-facing application (T1190) and privilege escalation to arbitrary code execution from low privileges (T1068).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

References