CVE-2026-86929

HIGH
MEDIUM Priority: 0.06 BB Relevance: 68/100
Published: 2026-10-26 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
apple macos 15.0 – 15.8.2
apple macos 26.0 – 26.7.2
apple macos 15.0 – 15.8.2
apple macos 26.0 – 26.7.2

References & Advisories (3)

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

Bug Bounty Relevance

68 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.65%
Raw Score 0.006530
Percentile 51.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00653
2026-10-28
0.00653

Intelligence Sources

mitre ref →
nvd ref →