CVE-2026-50658

HIGH
MEDIUM Priority: 0.01 BB Relevance: 29/100
Published: 2026-07-14 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

Time-of-check time-of-use (toctou) race condition in Microsoft Defender allows an authorized attacker to elevate privileges locally.

Affected Software (3)

VendorProductVersion
Microsoft Microsoft Defender for Endpoint for Mac 101.0.0 < 101.26042.0020
Microsoft Microsoft Defender for Endpoint for Mac 101.0.0 < 101.26042.0020
microsoft defender_for_endpoint 101.0.0 – 101.26042.0020

References & Advisories (1)

Bug Bounty Relevance

29 / 100
✓ No user interaction

CVSS Score

7.0 / 10.0 v3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.20%
Raw Score 0.002020
Percentile 10.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00202
2026-10-28
0.00202

Intelligence Sources

mitre ref →
nvd ref →