What is CVE-2023-21643?

CVE-2023-21643 is a critical-severity vulnerability in Qualcomm Apq8064au, classified under Untrusted Pointer Dereference. CVSS score: 9.1/10. Published 2023-08-08.

How severe is CVE-2023-21643?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Buffer overflow in Qualcomm Apq8064au

CVE-2023-21643

Memory corruption due to untrusted pointer dereference in automotive during system call.

Published 2023-08-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L.

EPSS exploit prediction

EPSS: 0.002 (13.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2023-21643?: CVE-2023-21643 is a critical-severity vulnerability in Qualcomm Apq8064au, classified under Untrusted Pointer Dereference. CVSS score: 9.1/10. Published 2023-08-08.
How severe is CVE-2023-21643?: Critical severity. CVSS v3 base score is 9.1 out of 10.