What is CVE-2023-43886?

CVE-2023-43886 is a high-severity vulnerability in Tenda Rx9 Pro, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2023-11-07.

How severe is CVE-2023-43886?

High severity. CVSS v3 base score is 7.1 out of 10.

Buffer overflow in Tenda Rx9 Pro

CVE-2023-43886

A buffer overflow in the HTTP server component of Tenda RX9 Pro v22.03.02.20 might allow an authenticated attacker to overwrite memory.

Vulnerability class: Buffer Overflow

Published 2023-11-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Tenda Rx9 Pro
Tenda Rx9 Pro Firmware — versions 22.03.02.10

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

blog.rtlcopymemory.com/tenda-rx9-pro/ (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-43886?: CVE-2023-43886 is a high-severity vulnerability in Tenda Rx9 Pro, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2023-11-07.
How severe is CVE-2023-43886?: High severity. CVSS v3 base score is 7.1 out of 10.