What is CVE-2023-33020?

CVE-2023-33020 is a high-severity vulnerability in Qualcomm 205, classified under Improper Authorization. CVSS score: 7.5/10. Published 2023-09-05.

How severe is CVE-2023-33020?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Qualcomm 205

CVE-2023-33020

Transient DOS in WLAN Host when an invalid channel (like channel out of range) is received in STA during CSA IE.

Published 2023-09-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (26.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

www.qualcomm.com/company/product-security/bulletins/september-2023-bulletin (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-33020?: CVE-2023-33020 is a high-severity vulnerability in Qualcomm 205, classified under Improper Authorization. CVSS score: 7.5/10. Published 2023-09-05.
How severe is CVE-2023-33020?: High severity. CVSS v3 base score is 7.5 out of 10.