What is CVE-2025-67073?

CVE-2025-67073 is a critical-severity vulnerability in Tenda Ac10, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2025-12-17.

How severe is CVE-2025-67073?

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

Buffer overflow in Tenda Ac10

CVE-2025-67073

A Buffer overflow vulnerability in function fromAdvSetMacMtuWan of bin httpd in Tenda AC10V4.0 V16.03.10.20 allows remote attackers to cause denial of service and possibly code execution by sending a post request with a crafted payload (field `serviceName`) to /goform/AdvSetMacMtuWan.

Vulnerability class: Buffer Overflow

Published 2025-12-17 · last modified 2026-10-13.

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.

EPSS exploit prediction

EPSS: 0.007 (52.0th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Tenda Ac10 — versions 4.0
Tenda Ac10 Firmware — versions 16.03.10.20

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/johnathanhuutri/CVEReport/tree/master/CVE-2025-67073 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-67073?: CVE-2025-67073 is a critical-severity vulnerability in Tenda Ac10, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2025-12-17.
How severe is CVE-2025-67073?: Critical severity. CVSS v3 base score is 9.8 out of 10.