CVE-2026-39870

HIGH

7.5

CVSS Score

Published: May 11, 2026 at 08:07 PM UTC

Updated: October 26, 2026 at 06:10 PM UTC

1 product affected across 1 vendormacOS

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Severity

HIGH7.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. Processing a maliciously crafted image may corrupt process memory.

Affected

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

macOS · Apple

95%

14.0 ≤ v < 14.8.715.0 ≤ v < 15.7.726.0 ≤ v < 26.5

Affected range stops below 14.8.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.7.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 26.5, 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 (3)

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/127115

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/127116

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/127117

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial 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: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-119

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