CVE-2021-31013 Information disclosure in macOS
Attackers can disclose process memory by tricking users into processing a maliciously crafted font on Apple operating systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-31013?
CVE-2021-31013 is a medium-severity vulnerability in Apple Ipados, published on 24 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.1, iOS 15.2 and iPadOS 15.2, macOS Big Sur 11.6.2. Processing a maliciously crafted font may result in the disclosure of process memory.
Weakness: CWE-125
Which versions are affected by CVE-2021-31013?
It affects 3 products.
Products include Apple Ipados, Apple Iphone Os, Apple Macos.
How do I fix CVE-2021-31013?
No fix has been published for CVE-2021-31013 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-31013 being exploited?
There is no known exploitation of CVE-2021-31013 in the wild and no public exploit code.
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