CISA KEV · Known exploitedHigh

CVE-2021-30883

Apple Multiple Products

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..

CVSS: 7.8
EPSS: 14.7%
CISA KEV: Listed
Published: 2021.08.25

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability14.7%

Technical severityCVSS 7.8

Vulnerability overview

Affected product and versions

Product: Apple Multiple Products
Affected versions: unspecified, < 14.8.1, >= 15.0 < 15.0.2, >= 11.0 < 11.6.1, 12.0, < 15.1, < 8.1
Fixed versions: 14.8.1, 15.0.2, 11.6.1, 15.1, 8.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.06.13

1
Identify
Confirm that Apple Multiple Products and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE: CWE-787
KEV added: 2022.05.23
Ransomware use: 미확인