macOS 26.x < 26.3 Multiple Vulnerabilities (126348)

critical Nessus Plugin ID 298694

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Synopsis

The remote host is missing a macOS update that fixes multiple vulnerabilities

Description

The remote host is running a version of macOS / Mac OS X that is 26.x prior to 26.3. It is, therefore, affected by multiple vulnerabilities:

- libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. (CVE-2025-59375)

- The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.4, iOS 18.7.5 and iPadOS 18.7.5, macOS Tahoe 26.3, macOS Sonoma 14.8.4. An app may be able to crash a system process. (CVE-2026-20605)

- A path handling issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.7.4, macOS Tahoe 26.3, macOS Sonoma 14.8.4. An app may be able to gain root privileges. (CVE-2026-20614)

- A path handling issue was addressed with improved validation. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, visionOS 26.3. An app may be able to gain root privileges.
(CVE-2026-20615)

- An issue was addressed with improved handling of temporary files. This issue is fixed in macOS Tahoe 26.3.
An app may be able to access user-sensitive data. (CVE-2026-20618)

Note that Nessus has not tested for these issues but has instead relied only on the operating system's self-reported version number.

Solution

Upgrade to macOS 26.3 or later.

Plugin Details

Severity: Critical

ID: 298694

File Name: macos_126348.nasl

Version: 1.3

Type: local

Agent: macosx

Family: MacOS X Local Security Checks

Published: 2/11/2026

Updated: 2/13/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2026-20660

CVSS v3

Risk Factor: Critical

Base Score: 9

Temporal Score: 8.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

CVSS Score Source: CVE-2026-20677

Vulnerability Information

CPE: cpe:/o:apple:mac_os_x:26.0, cpe:/o:apple:macos:26.0

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/11/2026

Vulnerability Publication Date: 6/10/2025

CISA Known Exploited Vulnerability Due Dates: 3/5/2026

Reference Information

CVE: CVE-2025-59375, CVE-2026-20601, CVE-2026-20602, CVE-2026-20603, CVE-2026-20605, CVE-2026-20606, CVE-2026-20608, CVE-2026-20609, CVE-2026-20610, CVE-2026-20611, CVE-2026-20612, CVE-2026-20614, CVE-2026-20615, CVE-2026-20616, CVE-2026-20617, CVE-2026-20618, CVE-2026-20619, CVE-2026-20620, CVE-2026-20621, CVE-2026-20623, CVE-2026-20624, CVE-2026-20625, CVE-2026-20626, CVE-2026-20627, CVE-2026-20628, CVE-2026-20629, CVE-2026-20630, CVE-2026-20634, CVE-2026-20635, CVE-2026-20636, CVE-2026-20641, CVE-2026-20644, CVE-2026-20646, CVE-2026-20647, CVE-2026-20648, CVE-2026-20649, CVE-2026-20650, CVE-2026-20652, CVE-2026-20653, CVE-2026-20654, CVE-2026-20656, CVE-2026-20658, CVE-2026-20660, CVE-2026-20662, CVE-2026-20666, CVE-2026-20667, CVE-2026-20669, CVE-2026-20671, CVE-2026-20673, CVE-2026-20675, CVE-2026-20676, CVE-2026-20677, CVE-2026-20680, CVE-2026-20681, CVE-2026-20700

APPLE-SA: 126348

IAVA: 2026-A-0151

Detections

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