CVE-2021-30983

7.8 HIGH CISA KEV - Actively Exploited

Published: August 24, 2021 Modified: October 23, 2025

Description

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An application may be able to execute arbitrary code with kernel privileges.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://support.apple.com/en-us/HT212976

Source: product-security@apple.com

Release Notes Vendor Advisory

https://support.apple.com/en-us/HT212976

Source: af854a3a-2127-422b-91ae-364da2661108

Release Notes Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30983

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

3 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.8 / 10.0

EPSS (Exploit Probability)

0.7%

71th percentile

Exploitation Status

Actively Exploited

Remediation due: 2022-07-18

Weaknesses (CWE)

CWE-120 CWE-120

Affected Vendors

apple

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