CVE-2024-40796Network attack vector

Browsing-history disclosure via unredacted log entries

Published Jul 29, 2024 · Updated Apr 2, 2026

Information disclosure in Apple iOS, iPadOS, and macOS allows attackers to read private browsing history from NetworkExtension logs. NetworkExtension writes private-browsing data into log entries without sufficient redaction, leaving browsing-history details exposed to log readers. Apple has not disclosed which log interface exposes the entries or how attackers obtain them; the documented consequence is limited to browsing-history disclosure.

CVSS severity5.3
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Apple iOS, iPadOS, and macOS allows attackers to read private browsing history from NetworkExtension logs. NetworkExtension writes private-browsing data into log entries without sufficient redaction, leaving browsing-history details exposed to log readers. Apple has not disclosed which log interface exposes the entries or how attackers obtain them; the documented consequence is limited to browsing-history disclosure.

The record

CVE
CVE-2024-40796
Published
Jul 29, 2024
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-359
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 <16.7.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <16.7.9
Apple · macOSversion=0 <12.7.6; version=0 <13.6.8; version=0 <14.6

Published CVSS scores

5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3CISA-ADPCVSS: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-359Exposure of Private Personal Information to an Unauthorized Actor

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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