What is CVE-2022-28561?

CVE-2022-28561 is a critical-severity vulnerability in Tenda Ax12, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-05-03.

How severe is CVE-2022-28561?

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

Buffer overflow in Tenda Ax12

CVE-2022-28561

There is a stack overflow vulnerability in the /goform/setMacFilterCfg function in the httpd service of Tenda ax12 22.03.01.21_cn router. An attacker can obtain a stable shell through a carefully constructed payload

Vulnerability class: Buffer Overflow

Published 2022-05-03 · last modified 2026-06-17.

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: 0.101 (95.5th percentile), scored 2026-10-03.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.101 · newest: 0.101 · change: 0.000

Affected products

Tenda Ax12
Tenda Ax12 Firmware — versions 22.03.01.21_cn

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/iot-firmeware/-Router-vulnerability/tree/main/AX12 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-28561?: CVE-2022-28561 is a critical-severity vulnerability in Tenda Ax12, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-05-03.
How severe is CVE-2022-28561?: Critical severity. CVSS v3 base score is 9.8 out of 10.