macOS 11.x < 11.6 (HT212804)

high Nessus Plugin ID 153429


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 11.6 Big Sur. It is, therefore, affected by multiple vulnerabilities including the following:

- A use after free issue was addressed with improved memory management. Exploitation of this vulnerability may lead to arbitrary code execution. (CVE-2021-30858)

- An integer overflow was addressed with improved input validation. Exploitation of this vulnerability may lead to arbitrary code execution. (CVE-2021-30860)

- Insufficient checks when processing maliciously crafted dfont files may lead to arbitrary code execution. (CVE-2021-30841, CVE-2021-30842, CVE-2021-30843)

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 11.6 or later.

See Also

Plugin Details

Severity: High

ID: 153429

File Name: macos_HT212804.nasl

Version: 1.15

Type: local

Agent: macosx

Published: 9/16/2021

Updated: 9/28/2022

Supported Sensors: Nessus Agent

Risk Information


Risk Factor: High

Score: 7.4


Risk Factor: High

Base Score: 9.3

Temporal Score: 8.1

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

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

CVSS Score Source: CVE-2021-30865


Risk Factor: High

Base Score: 8.8

Temporal Score: 8.4

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

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

CVSS Score Source: CVE-2021-30858

Vulnerability Information

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/13/2021

Vulnerability Publication Date: 9/13/2021

CISA Known Exploited Dates: 11/17/2021, 9/15/2022

Reference Information

CVE: CVE-2013-0340, CVE-2021-22925, CVE-2021-30827, CVE-2021-30828, CVE-2021-30829, CVE-2021-30830, CVE-2021-30832, CVE-2021-30841, CVE-2021-30842, CVE-2021-30843, CVE-2021-30844, CVE-2021-30845, CVE-2021-30847, CVE-2021-30850, CVE-2021-30853, CVE-2021-30855, CVE-2021-30857, CVE-2021-30858, CVE-2021-30859, CVE-2021-30860, CVE-2021-30865, CVE-2021-31010

APPLE-SA: HT212804, APPLE-SA-2021-09-13-3

IAVA: 2021-A-0414-S, 2021-A-0437-S, 2021-A-0505-S