CVE-2020-27950
KEVMEDIUM 5.5EPSS 16.5%
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.
- Affected
- Apple · watchOS · iOS and iPadOS · macOS
- CVSS v3.1 NVD
- 5.5 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - CVSS v2.0 NVD
- 7.1 HIGH
AV:N/AC:M/Au:N/C:C/I:N/A:N - EPSS
- 16.52% chance of exploitation in the next 30 days, 97th percentile
- CISA KEV
- added 2021-11-03
- Published
- 2020-12-08
- Updated
- 2025-10-21
Proof-of-concept exploits (1)
- synacktiv/CVE-2020-2795034★ · 2020-12-01
Security advisories
- https://support.apple.com/en-us/HT211928
- https://support.apple.com/en-us/HT211929
- https://support.apple.com/en-us/HT211931
- https://support.apple.com/en-us/HT211940
- https://support.apple.com/en-us/HT211944
- https://support.apple.com/en-us/HT211945
- https://support.apple.com/en-us/HT211946
- https://support.apple.com/en-us/HT211947
- http://packetstormsecurity.com/files/161296/XNU-Kernel-Mach-Message-Trailers-Memory-Discl…
- http://seclists.org/fulldisclosure/2020/Dec/32