CISA KEV · Known exploitedMedium

CVE-2020-27950

Apple Multiple Products

A memory initialization issue was addressed. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. A malicious application may be able to disclose kernel memory.

CVSS: 5.5
EPSS: 16.5%
CISA KEV: Listed
Published: 2020.12.09

PRIORITY ASSESSMENT

Immediate review

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

Known exploitationConfirmed by CISA KEV

Exploit probability16.5%

Technical severityCVSS 5.5

Vulnerability overview

Affected product and versions

Product: Apple Multiple Products
Affected versions: unspecified, < 14.2, < 12.4.9, >= 14.0 < 14.2, < 10.15.7, >= 11.0 < 11.0.1, < 5.3.9, >= 6.0 < 6.2.9, >= 7.0 < 7.1
Fixed versions: 14.2, 12.4.9, 10.15.7, 11.0.1, 5.3.9, 6.2.9, 7.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03

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:N/A:N
CWE: CWE-665
KEV added: 2021.11.03
Ransomware use: 미확인