CVE-2025-43353 Memory corruption in macOS
Heap corruption in macOS allows attackers to execute arbitrary code via a maliciously crafted string.
- 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-2025-43353?
CVE-2025-43353 is a medium-severity memory corruption vulnerability in Apple Macos, published on 15 Sep 2025. 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
The issue was addressed with improved bounds checks. This issue is fixed in macOS Sequoia 15.7, macOS Sonoma 14.8, macOS Tahoe 26. Processing a maliciously crafted string may lead to heap corruption.
Weakness: CWE-787
Which versions are affected by CVE-2025-43353?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2025-43353?
No fix has been published for CVE-2025-43353 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-43353 being exploited?
There is no known exploitation of CVE-2025-43353 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-7jw3-5j8w-xj2r.