CVE-2026-86929 — HIGH (8.8)

Q: How severe is CVE-2026-86929?

CVE-2026-86929 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-86929?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Macos.

Vulnerability Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted file may lead to arbitrary code execution.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Apple	Macos	>= 15.0, < 15.8.2

Related Weaknesses (CWE)

CWE-125

References

https://support.apple.com/en-us/149035Release NotesVendor Advisory
https://support.apple.com/en-us/149522Release NotesVendor Advisory
https://support.apple.com/en-us/149523Release NotesVendor Advisory

FAQ

What is CVE-2026-86929?

CVE-2026-86929 is a vulnerability with a CVSS score of 8.8 (HIGH). An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted file m...

How severe is CVE-2026-86929?

CVE-2026-86929 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-86929?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Macos.