CVE-2024-40794Network attack vector

Private tab access via flawed state management

Published Jul 29, 2024 · Updated Apr 2, 2026

Authentication bypass in Apple WebKit allows attackers to view private tabs in Safari before 17.6, iOS and iPadOS before 17.6, and macOS before 14.6. WebKit's Private Browsing state management fails to preserve the authentication lock when tabs are accessed, exposing their contents without reauthentication. The bypass requires access to the browser or device context holding locked Private Browsing tabs and is limited to the confidentiality of those tabs.

CVSS severity5.3
Medium
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Apple WebKit allows attackers to view private tabs in Safari before 17.6, iOS and iPadOS before 17.6, and macOS before 14.6. WebKit's Private Browsing state management fails to preserve the authentication lock when tabs are accessed, exposing their contents without reauthentication. The bypass requires access to the browser or device context holding locked Private Browsing tabs and is limited to the confidentiality of those tabs.

The record

CVE
CVE-2024-40794
Published
Jul 29, 2024
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-287, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record 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=0 <17.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <17.6
Apple · Safariversion=0 <17.6
Apple · macOSversion=0 <14.6

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
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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