macOS 26.x < 26.5.2 Multiple Vulnerabilities (127595)

critical Nessus Plugin ID 323673

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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 26.5.2. It is, therefore, affected by multiple vulnerabilities:

- A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to memory corruption. (CVE-2026-43715, CVE-2026-43731)

- This issue was addressed with improved input validation. This issue is fixed in iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. An app may be able to cause unexpected system termination or corrupt kernel memory. (CVE-2026-39868)

- An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected process crash. (CVE-2026-28979)

- The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected process crash. (CVE-2026-39872, CVE-2026-43663, CVE-2026-43712)

- An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected Safari crash. (CVE-2026-43676)

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 26.5.2 or later.

Plugin Details

Severity: Critical

ID: 323673

File Name: macos_127595.nasl

Version: 1.4

Type: Local

Agent: macosx

Family: MacOS X Local Security Checks

Published: 6/29/2026

Updated: 7/14/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.44

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-43746

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

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

CVSS Score Source: CVE-2026-39868

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: 6/29/2026

Vulnerability Publication Date: 6/29/2026

Reference Information

CVE: CVE-2026-28979, CVE-2026-39868, CVE-2026-39872, CVE-2026-43663, CVE-2026-43676, CVE-2026-43699, CVE-2026-43700, CVE-2026-43701, CVE-2026-43703, CVE-2026-43704, CVE-2026-43705, CVE-2026-43706, CVE-2026-43707, CVE-2026-43708, CVE-2026-43709, CVE-2026-43712, CVE-2026-43713, CVE-2026-43715, CVE-2026-43716, CVE-2026-43717, CVE-2026-43718, CVE-2026-43720, CVE-2026-43721, CVE-2026-43722, CVE-2026-43724, CVE-2026-43725, CVE-2026-43726, CVE-2026-43727, CVE-2026-43731, CVE-2026-43732, CVE-2026-43734, CVE-2026-43735, CVE-2026-43740, CVE-2026-43742, CVE-2026-43743, CVE-2026-43745, CVE-2026-43746

APPLE-SA: 127595

IAVA: 2026-A-0644

Detections

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