Buffer overflow in Tenda O4

CVE-2025-25662

Tenda O4 V3.0 V1.0.0.10(2936) is vulnerable to Buffer Overflow in the function SafeSetMacFilter of the file /goform/setMacFilterList via the argument remark/type/time.

Vulnerability class: Buffer Overflow

Published · last modified .

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: 0.004 (36.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-25662: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-25662?
CVE-2025-25662 is a critical-severity vulnerability in Tenda O4, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2025-02-20.
How severe is CVE-2025-25662?
Critical severity. CVSS v3 base score is 9.8 out of 10.