Vulnerability · Published Sep 15, 2025 · Assigned by apple

CVE-2025-43366

Medium 5.5

In plain English

A medium-severity out-of-bounds read 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 0.2% (higher than 11% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)0.2%top 88.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Tahoe 26. An app may be able to disclose coprocessor memory.

Affected products (as reported)

Vendor	Product	Versions
Apple	macOS	0 – before 26

Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

https://support.apple.com/en-us/125110
http://seclists.org/fulldisclosure/2025/Sep/53