Vulnerability · Published Jul 29, 2025 · Assigned by apple

CVE-2025-43237

Critical 9.8

In plain English

A critical-severity out-of-bounds write in macOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)0.6%top 53.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.6. An app may be able to cause unexpected system termination.

Affected products (as reported)

Vendor	Product	Versions
Apple	macOS	0 – before 15.6

Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://support.apple.com/en-us/124149
http://seclists.org/fulldisclosure/2025/Jul/32