Apple iOS < 12.5.3 Multiple Vulnerabilities (HT212341)

high Nessus Plugin ID 149331


The version of Apple iOS running on the mobile device is affected by multiple vulnerabilities.


The version of Apple iOS running on the mobile device is prior to 12.5.3. It is, therefore, affected by multiple vulnerabilities including the following:

- A use after free issue was addressed with improved memory management (CVE-2021-30661).

- An integer overflow was addressed with improved input validation (CVE-2021-30663).

- A buffer overflow issue was addressed with improved memory handling (CVE-2021-30666).

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


Upgrade to Apple iOS version 12.5.3 or later

See Also

Plugin Details

Severity: High

ID: 149331

File Name: apple_ios_1253_check.nbin

Version: 1.14

Type: local

Published: 5/7/2021

Updated: 5/24/2022

Risk Information

CVSS Score Source: CVE-2021-30666


Risk Factor: Critical

Score: 9


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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


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

Vulnerability Information

CPE: cpe:/o:apple:iphone_os

Required KB Items: mdm/dependency/unlocked

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/3/2021

Vulnerability Publication Date: 5/3/2021

CISA Known Exploited Dates: 11/17/2021

Reference Information

CVE: CVE-2021-30661, CVE-2021-30663, CVE-2021-30665, CVE-2021-30666

APPLE-SA: APPLE-SA-2021-05-03-2, HT212341

IAVA: 2021-A-0213-S