What is CVE-2026-51844?

CVE-2026-51844 is a critical-severity vulnerability in Tenda Ac7, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-06-19.

How severe is CVE-2026-51844?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Tenda Ac7

CVE-2026-51844

Tenda AC7 v15.03.06.44 contains a stack buffer overflow vulnerability in the /goform/AdvSetMacMtuWan interface via the cloneType parameter.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (35.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tenda Ac7
Tenda Ac7_firmware — versions 15.03.06.44
N/a — versions n/a

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-51844?: CVE-2026-51844 is a critical-severity vulnerability in Tenda Ac7, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-06-19.
How severe is CVE-2026-51844?: Critical severity. CVSS v3 base score is 9.8 out of 10.