CVE-2026-43764 | An integer overflow was addressed with improved input valida… | CVSS 9.8 CRITICAL

Description

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.

Metadata

CVE ID: CVE-2026-43764
State: PUBLISHED
Assigner: apple
Reserved: 2026-05-01 22:46 UTC
Published: 2026-07-27 20:12 UTC
Last updated: 2026-07-28 14:39 UTC
Primary CWE: CWE-190
CWE-190 Integer Overflow or Wraparound
Vendor / Product: Apple / macOS
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Apple	macOS	—	0 < 14.8.8, 0 < 15.7.8, 0 < 26.6

Weakness (CWE)

CWE	Source	Description
—	cna	An app may be able to cause unexpected system termination
CWE-190	adp	CWE-190 Integer Overflow or Wraparound

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (3)