What is CVE-2025-29385?

CVE-2025-29385 is a critical-severity vulnerability in Tenda Ac9, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-03-14.

How severe is CVE-2025-29385?

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

Buffer overflow in Tenda Ac9

CVE-2025-29385

In Tenda AC9 v1.0 V15.03.05.14_multi, the cloneType parameter of /goform/AdvSetMacMtuWan has a stack overflow vulnerability, which can lead to remote arbitrary code execution.

Vulnerability class: Buffer Overflow

Published 2025-03-14 · 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: 0.009 (58.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000

Affected products

Tenda Ac9 — versions 1.0
Tenda Ac9 Firmware — versions 15.03.05.14

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/shuqi233/loophole/blob/main/Tenda AC9/AdvSetMacMtuWan3.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-29385?: CVE-2025-29385 is a critical-severity vulnerability in Tenda Ac9, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-03-14.
How severe is CVE-2025-29385?: Critical severity. CVSS v3 base score is 9.8 out of 10.