CVE-2026-2910
Published: 22 February 2026
Summary
CVE-2026-2910 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda Hg9 Firmware. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 16.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
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.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-7542
Vulnerability details
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…
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has been published and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
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).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly remediates the stack-based buffer overflow flaw in Tenda HG9 firmware version 300001138 through timely patching or updates.
Requires validation of the pingAddr argument in /boaform/formPing6 to block malformed inputs causing the buffer overflow.
Provides memory protections like stack canaries and ASLR to detect and prevent exploitation of the stack-based buffer overflow.