CVE-2026-39877 Information disclosure in iOS and iPadOS
An app can disclose kernel memory due to a memory corruption issue in Apple operating systems, requiring an upgrade to patched versions.
- Exploited in the wild
- Not known
- 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-2026-39877?
CVE-2026-39877 is a high-severity vulnerability in Apple Macos, published on 27 Jul 2026. 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 corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An app may be able to disclose kernel memory.
Weakness: CWE-119
Which versions are affected by CVE-2026-39877?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2026-39877?
No fix has been published for CVE-2026-39877 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-39877 being exploited?
There is no known exploitation of CVE-2026-39877 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-hvwx-8xwj-pgx8.