PT-2026-48010 · Microsoft · Defender For Endpoint For Mac

Mihalis Haatainen · CVE-2026-45647 · Published 2026-06-09 · Updated 2026-06-19

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Microsoft Defender for Endpoint for Mac (affected versions not specified)

Description A time-of-check time-of-use (TOCTOU) race condition occurs in Microsoft Defender for Endpoint. This is a software bug where a system checks a condition (such as a security credential) and then uses the result of that check, but the condition changes between the check and the use. This flaw allows an authorized attacker to elevate privileges locally due to synchronization errors when using a shared resource.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

BDU:2026-08352

CVE-2026-45647

Affected Products

Defender For Endpoint For Mac

References · 4

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45647 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-45647 · Security Note
• https://bdu.fstec.ru/vul/2026-08352 · Security Note
• https://t.me/cveNotify/170850 · Telegram Post