What is CVE-2023-49402?

CVE-2023-49402 is a critical-severity vulnerability in Tenda W30e, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-12-07.

How severe is CVE-2023-49402?

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

Buffer overflow in Tenda W30e

CVE-2023-49402

Tenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function localMsg.

Vulnerability class: Buffer Overflow

Published 2023-12-07 · 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 (58.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.9% 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 W30e
Tenda W30e Firmware — versions 16.01.0.12\(4843\), 16.01.0.12(4843)

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/GD008/TENDA/blob/main/w30e/tenda_w30e_localMsg/w30e_localMsg.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-49402?: CVE-2023-49402 is a critical-severity vulnerability in Tenda W30e, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-12-07.
How severe is CVE-2023-49402?: Critical severity. CVSS v3 base score is 9.8 out of 10.