CVE-2023-23524

HIGH

7.5

CVSS Score

Published: February 27, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 05:37 AM UTC

5 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity

HIGH7.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

A denial-of-service issue was addressed with improved input validation. This issue is fixed in tvOS 16.3.2, iOS 16.3.1 and iPadOS 16.3.1, watchOS 9.3.1, macOS Ventura 13.2.1. Processing a maliciously crafted certificate may lead to a denial-of-service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS · Apple

95%

v < 16.3v < 16.3.1

Affected range stops below 16.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.3.1, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

v < 16.3.1

Affected range stops below 16.3.1, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

v < 13.2v < 13.2.1

Affected range stops below 13.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 13.2.1, so it looks safe — our inference, not a vendor statement

tvOS · Apple

95%

v < 16.3v < 16.3.2

Affected range stops below 16.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.3.2, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

v < 9.3v < 9.3.1

Affected range stops below 9.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.3.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213632

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213633

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213634

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213635

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-400

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