CVE-2020-27950
Apple watchOS, Apple iOS and iPadOS, Apple macOS
Published 8 Dec 2020 · updated 17 Jun 2026 · Analyzed
5.5 Medium · CVSS 3.1, NVD
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, with a remediation deadline of 3 May 2022 for US federal agencies.
Required action: Apply updates per vendor instructions.
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.
References
- packetstormsecurity.com/files/161296/XNU-Kernel-Mach-Message-Trailers-Memory-Disclosure.html · Third Party Advisory, VDB Entry
- seclists.org/fulldisclosure/2020/Dec/32 · Mailing List, Third Party Advisory
- support.apple.com/en-us/HT211928 · Vendor Advisory
- support.apple.com/en-us/HT211929 · Vendor Advisory
- support.apple.com/en-us/HT211931 · Vendor Advisory
- support.apple.com/en-us/HT211940 · Vendor Advisory
- support.apple.com/en-us/HT211944 · Vendor Advisory
- support.apple.com/en-us/HT211945 · Vendor Advisory
- support.apple.com/en-us/HT211946 · Vendor Advisory
- support.apple.com/en-us/HT211947 · Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27950 · US Government Resource