macOS 11.x < 11.3 (HT212325)

critical Nessus Plugin ID 149041


The remote host is missing a macOS security update.


The remote host is running a version of macOS / Mac OS X that is 11.x prior to 11.3 Big Sur. It is, therefore, affected by multiple vulnerabilities including the following:

- A memory corruption issue which could allow an application restricted memory read access (CVE-2021-1808).

- A memory corruption issue which could allow an application to cause unexpected system termination or to write kernel memory (CVE-2021-1828).

- An out-of-bounds wirte issue which could allow a malicious application to execute arbitrary code with kernel privileges (CVE-2021-1834).

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


Upgrade to macOS 11.3 or later.

See Also

Plugin Details

Severity: Critical

ID: 149041

File Name: macos_HT212325.nasl

Version: 1.10

Type: local

Agent: macosx

Published: 4/28/2021

Updated: 1/21/2022

Supported Sensors: Nessus Agent

Risk Information


Risk Factor: High

Score: 7.4


Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

Temporal Vector: E:H/RL:OF/RC:C

CVSS Score Source: CVE-2021-30655


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

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

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/26/2021

Vulnerability Publication Date: 4/26/2021

CISA Known Exploited Dates: 11/17/2021

Exploitable With

Metasploit (macOS Gatekeeper check bypass)

Reference Information

CVE: CVE-2020-7463, CVE-2020-8037, CVE-2020-8285, CVE-2020-8286, CVE-2021-1739, CVE-2021-1740, CVE-2021-1784, CVE-2021-1808, CVE-2021-1809, CVE-2021-1810, CVE-2021-1811, CVE-2021-1813, CVE-2021-1814, CVE-2021-1815, CVE-2021-1817, CVE-2021-1820, CVE-2021-1824, CVE-2021-1825, CVE-2021-1826, CVE-2021-1828, CVE-2021-1829, CVE-2021-1832, CVE-2021-1834, CVE-2021-1839, CVE-2021-1840, CVE-2021-1841, CVE-2021-1843, CVE-2021-1846, CVE-2021-1847, CVE-2021-1849, CVE-2021-1851, CVE-2021-1853, CVE-2021-1855, CVE-2021-1857, CVE-2021-1858, CVE-2021-1859, CVE-2021-1860, CVE-2021-1861, CVE-2021-1867, CVE-2021-1868, CVE-2021-1872, CVE-2021-1873, CVE-2021-1875, CVE-2021-1876, CVE-2021-1878, CVE-2021-1880, CVE-2021-1881, CVE-2021-1882, CVE-2021-1883, CVE-2021-1884, CVE-2021-1885, CVE-2021-30652, CVE-2021-30653, CVE-2021-30655, CVE-2021-30657, CVE-2021-30658, CVE-2021-30659, CVE-2021-30660, CVE-2021-30661

APPLE-SA: HT212325, APPLE-SA-2021-04-26-2

IAVA: 2021-A-0202-S