CVE-2025-43494

HIGH

7.5

CVSS Score

Published: December 12, 2025 at 08:56 PM UTC

Updated: October 7, 2026 at 11:10 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 mail header parsing issue was addressed with improved checks. This issue is fixed in watchOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Tahoe 26.1, visionOS 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, iOS 26.1 and iPadOS 26.1. An attacker may be able to cause a persistent denial-of-service.

Affected

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

iPadOS · Apple

95%

v < 18.7.2v < 26.126.0

Affected range stops below 18.7.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 26.1, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

v < 18.7.226.0

Affected range stops below 18.7.2, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

v < 14.8.2v < 15.7.2v < 26.114.0 ≤ v < 14.8.215.0 ≤ v < 15.7.226.0

Affected range stops below 14.8.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.7.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 26.1, so it looks safe — our inference, not a vendor statement

visionOS · Apple

95%

v < 26.1

Affected range stops below 26.1, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

v < 26.1

Affected range stops below 26.1, 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 (7)

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/125636

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/125634

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/125638

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/125639

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/125635

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/125632

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/125633

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal 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-20

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