What is CVE-2023-42973?

CVE-2023-42973 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Authorization. CVSS score: 4.0/10. Published 2025-04-11.

How severe is CVE-2023-42973?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Auth bypass in Apple iOS And Ipados

CVE-2023-42973

Private Browsing tabs may be accessed without authentication. This issue is fixed in iOS 17 and iPadOS 17. The issue was addressed with improved UI.

Published 2025-04-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (7.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% 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

Apple iOS And Ipados — versions unspecified
Apple Ipados — versions 17.0
Apple Iphone OS — versions 17.0

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

support.apple.com/en-us/120949 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2023-42973?: CVE-2023-42973 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Authorization. CVSS score: 4.0/10. Published 2025-04-11.
How severe is CVE-2023-42973?: Medium severity. CVSS v3 base score is 4.0 out of 10.