Dashboard / CVE-2026-28991

CVE-2026-28991

HIGH
MEDIUM Priority: 0.04 BB Relevance: 75/100
Published: 2026-05-11 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

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

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.8.2, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An app may be able to cause a denial-of-service.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
apple ipados < 26.5
apple iphone_os < 26.5
apple macos 26.0 – 26.5
apple tvos < 26.5
apple visionos < 26.5
apple watchos < 26.5

References & Advisories (6)

https://support.apple.com/en-us/127110
Release Notes Vendor Advisory
https://support.apple.com/en-us/127115
Release Notes Vendor Advisory
https://support.apple.com/en-us/127118
Release Notes Vendor Advisory
https://support.apple.com/en-us/127119
Release Notes Vendor Advisory
https://support.apple.com/en-us/127120
Release Notes Vendor Advisory

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.56%
Raw Score 0.005600
Percentile 46.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00560
2026-10-28
0.00560

Intelligence Sources

mitre ref →
nvd ref →

External Links