Buffer overflow in Tenda Ac8

CVE-2025-25664

Tenda AC8V4 V16.03.34.06 was discovered to contain a stack overflow via the shareSpeed parameter in the sub_49E098 function.

Vulnerability class: Buffer Overflow

EPSS: 0.005 (41.5th 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 Ac8 — versions 4.0
Tenda Ac8_firmware — versions 16.03.34.06
N/a — versions n/a

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2025-25664?: CVE-2025-25664 is a critical-severity vulnerability in Tenda Ac8, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-02-20.
How severe is CVE-2025-25664?: Critical severity. CVSS v3 base score is 9.8 out of 10.