CVE-2026-20639

7.5 HIGH

Published: March 25, 2026 Modified: March 25, 2026

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://support.apple.com/en-us/126348

Source: product-security@apple.com

Release Notes Vendor Advisory

https://support.apple.com/en-us/126795

Source: product-security@apple.com

Release Notes Vendor Advisory

https://support.apple.com/en-us/126796

Source: product-security@apple.com

Release Notes Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

0.1%

16th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-190

Affected Vendors

apple

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