CVE-2026-28815

HIGH

Apple Macos < 4.3.1 - Out-of-Bounds Access

Title source: rule

Description

A remote attacker can supply a short X-Wing HPKE encapsulated key and trigger an out-of-bounds read in the C decapsulation path, potentially causing a crash or memory disclosure depending on runtime protections. This issue is fixed in swift-crypto version 4.3.1.

References (1)

https://github.com/apple/swift-crypto/security/advisories/GHSA-9m44-rr2w-ppp7

Scores

CVSS v3 7.5

EPSS 0.0005

EPSS Percentile 15.3%

Attack Vector NETWORK

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

Details

CWE

CWE-125

Status published

Products (3)

Apple/macOS 4.0.0 - 4.3.1

apple/swift-crypto 4.0.0 - 4.3.1

SwiftURL/swift-crypto 4.0.0 - 4.3.1SwiftURL

Published Apr 03, 2026

Tracked Since Apr 03, 2026