What is CVE-2022-42233?

CVE-2022-42233 is a critical-severity vulnerability in Tenda 11n, classified under Improper Authentication. CVSS score: 9.8/10. Published 2022-10-20.

How severe is CVE-2022-42233?

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

Is CVE-2022-42233 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Tenda 11n

CVE-2022-42233

Tenda 11N with firmware version V5.07.33_cn suffers from an Authentication Bypass vulnerability.

Vulnerability class: Broken Authentication

Published 2022-10-20 · 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: 0.427 (98.7th percentile), scored 2026-10-04.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.427 · newest: 0.427 · change: 0.000

Affected products

Tenda 11n
Tenda 11n Firmware — versions 5.07.33_cn

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

References

github.com/D0ngsec/vulns/blob/main/Tenda/Tenda_11N_Authentication_Bypass.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-42233?: CVE-2022-42233 is a critical-severity vulnerability in Tenda 11n, classified under Improper Authentication. CVSS score: 9.8/10. Published 2022-10-20.
How severe is CVE-2022-42233?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-42233 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.