What is CVE-2023-39221?

CVE-2023-39221 is a medium-severity vulnerability in Apple Iphone OS, classified under Improper Access Control. CVSS score: 5.4/10. Published 2023-11-14.

How severe is CVE-2023-39221?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Apple Iphone OS

CVE-2023-39221

Improper access control for some Intel Unison software may allow an authenticated user to potentially enable escalation of privilege via network access.

Published 2023-11-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (35.8th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Apple Iphone OS
Google Android
Intel Unison Software
Microsoft Windows
Intel Unison Software — versions See references

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00963.html (Vendor Advisory)

Frequently asked questions

What is CVE-2023-39221?: CVE-2023-39221 is a medium-severity vulnerability in Apple Iphone OS, classified under Improper Access Control. CVSS score: 5.4/10. Published 2023-11-14.
How severe is CVE-2023-39221?: Medium severity. CVSS v3 base score is 5.4 out of 10.