CVE-2020-27950

5.5 MEDIUM CISA KEV - Actively Exploited
Published: December 08, 2020 Modified: October 27, 2025
View on NVD

Description

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.

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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:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://packetstormsecurity.com/files/161296/XNU-Kernel-Mach-Message-Trailers-Memory-Disclosure.html
Source: product-security@apple.com
Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2020/Dec/32
Source: product-security@apple.com
Mailing List Third Party Advisory
https://support.apple.com/en-us/HT211928
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT211929
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT211931
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT211940
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT211944
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT211945
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT211946
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT211947
Source: product-security@apple.com
Vendor Advisory
http://packetstormsecurity.com/files/161296/XNU-Kernel-Mach-Message-Trailers-Memory-Disclosure.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2020/Dec/32
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://support.apple.com/en-us/HT211928
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT211929
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT211931
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT211940
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT211944
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT211945
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT211946
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT211947
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27950
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

21 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.5 / 10.0
EPSS (Exploit Probability)
37.7%
97th percentile
Exploitation Status
Actively Exploited
Remediation due: 2022-05-03

Weaknesses (CWE)

CWE-665 CWE-665

Affected Vendors

apple

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