CVE-2020-27950 Apple Multiple Products Memory Initialization
A malicious application can disclose kernel memory due to a memory initialization issue in Apple operating systems.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-27950?
CVE-2020-27950 is a medium-severity vulnerability in Apple Ipados, published on 8 Dec 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-665
Which versions are affected by CVE-2020-27950?
It affects 4 products.
Products include Apple Ipados, Apple Iphone Os, Apple Macos, Apple Watchos.
How do I fix CVE-2020-27950?
No fix has been published for CVE-2020-27950 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 May 2022.
Is CVE-2020-27950 being exploited?
Yes. Attackers have exploited CVE-2020-27950 in the wild since at least 3 Nov 2021.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in Apple Ipados
- CVE-2025-43300 Apple iOS, iPadOS, and macOS Out-of-Bounds Write
- CVE-2025-24201 Apple Multiple Products WebKit Out-of-Bounds Write
- CVE-2025-24085 Apple Multiple Products Use-After-Free
- CVE-2025-31200 Apple Multiple Products Memory Corruption
- CVE-2025-31201 Apple Multiple Products Arbitrary Read and Write
Sources
Also known as GHSA-76v6-7m6g-p6v4.