What is CVE-2022-25427?

CVE-2022-25427 is a critical-severity vulnerability in Tenda Ac9, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-03-18.

How severe is CVE-2022-25427?

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

Buffer overflow in Tenda Ac9

CVE-2022-25427

Tenda AC9 v15.03.2.21 was discovered to contain a stack overflow via the schedendtime parameter in the openSchedWifi function.

Vulnerability class: Buffer Overflow

Published 2022-03-18 · 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: 0.017 (76.3th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Tenda Ac9
Tenda Ac9 Firmware — versions 15.03.2.21

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/EPhaha/IOT_vuln/tree/main/Tenda/AC9/2 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-25427?: CVE-2022-25427 is a critical-severity vulnerability in Tenda Ac9, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-03-18.
How severe is CVE-2022-25427?: Critical severity. CVSS v3 base score is 9.8 out of 10.