What is CVE-2023-40846?

CVE-2023-40846 is a critical-severity vulnerability in Tenda Ac6, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-08-28.

How severe is CVE-2023-40846?

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

Buffer overflow in Tenda Ac6

CVE-2023-40846

Tenda AC6 US_AC6V1.0BR_V15.03.05.16_multi_TD01.bin is vulnerable to Buffer Overflow via function sub_90998.

Vulnerability class: Buffer Overflow

Published 2023-08-28 · 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: 0.008 (56.5th percentile), scored 2026-10-08.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Tenda Ac6 — versions 1.0
Tenda Ac6 Firmware — versions 15.03.05.16

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/XYIYM/Digging/blob/main/Tenda/AC6/bof/9/9.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-40846?: CVE-2023-40846 is a critical-severity vulnerability in Tenda Ac6, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-08-28.
How severe is CVE-2023-40846?: Critical severity. CVSS v3 base score is 9.8 out of 10.