CVE-2023-42973

Private-tab disclosure via missing UI authentication

Published Apr 11, 2025 · Updated Apr 11, 2025

Improper authorization in Safari Private Browsing in iOS and iPadOS before 17 allows physically proximate attackers to view open private tabs. The Safari Private Browsing UI fails to require successful device authentication before exposing existing private-tab content. Physical access to the device is required, and Apple reports only disclosure of existing private-tab content, not modification or service interruption.

CVSS severity4.0
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Safari Private Browsing in iOS and iPadOS before 17 allows physically proximate attackers to view open private tabs. The Safari Private Browsing UI fails to require successful device authentication before exposing existing private-tab content. Physical access to the device is required, and Apple reports only disclosure of existing private-tab content, not modification or service interruption.

The record

CVE
CVE-2023-42973
Published
Apr 11, 2025
Updated
Apr 11, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-285, T1005
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <17

Published CVSS scores

4.0CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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