CVE-2026-43776

HIGH

7.8

CVSS Score

Published: July 27, 2026 at 08:14 PM UTC

Updated: August 17, 2026 at 10:34 PM UTC

3 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.

Affected

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

iPadOS · Apple

95%

v < 18.7.10v < 26.6

Affected range stops below 18.7.10, so it looks safe — our inference, not a vendor statement

Affected range stops below 26.6, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

v < 26.6

Affected range stops below 26.6, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

v < 15.7.8v < 26.615.0 ≤ v < 15.7.826.0 ≤ v < 26.6

Affected range stops below 15.7.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 26.6, 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)

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/128066

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/128067

Release NotesVendor Advisory

Source: cverecord

https://support.apple.com/en-us/128071

Source: cverecord

https://support.apple.com/en-us/148287

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

7.8HIGHCISA-ADP

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-120

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