Private Browsing tabs may be accessed without authentication.

published 2025-04-11 18 mo ago modified 2026-06-17 4 mo ago also EUVD-2023-47394

cvss: 4.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

Apple iOS and iPadOS 17

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-04-11)

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.0	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA	3.1	4.0	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

Apple iOS and iPadOS

Classification

Weakness

CWE-285 Improper Authorization

References

support.apple.com /en-us/120949
release-notes, vendor-advisory

Sources

CVE List CVE-2023-42973
NVD CVE-2023-42973

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary