CVE-2023-42951Network attack vector

Browsing history deletion failure via cache mishandling

Published Feb 21, 2024 · Updated Nov 4, 2025

Cache handling in Safari in Apple iOS and iPadOS before 17.1 allows users to encounter browsing history items that cannot be deleted. Apple has disclosed only that Safari mishandles caches used for browsing history; the affected cache operation and trigger remain undisclosed. The issue occurs during a user's attempt to delete history and leaves selected history entries retained, with no published impact beyond failed deletion.

CVSS severity4.3
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cache handling in Safari in Apple iOS and iPadOS before 17.1 allows users to encounter browsing history items that cannot be deleted. Apple has disclosed only that Safari mishandles caches used for browsing history; the affected cache operation and trigger remain undisclosed. The issue occurs during a user's attempt to delete history and leaves selected history entries retained, with no published impact beyond failed deletion.

The record

CVE
CVE-2023-42951
Published
Feb 21, 2024
Updated
Nov 4, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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 <17.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <17.1

Published CVSS scores

4.3NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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