HarborGuard / CVE
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HIGHCVE-2026-20639Published Modified CNA apple

CVE-2026-20639: An integer overflow was addressed with improved input validation

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3. Processing a maliciously crafted string may lead to heap corruption.

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
14.8.5
Affected Products
1

Fix available

14.8.515.7.526.3
Affected packages
  • Apple / macOS
    < 14.8.5 (from 0) · < 15.7.5 (from 0) · < 26.3 (from 0)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References