CVE-2026-59118

critical

Microsoft

CVSS v3 Base Score

9.3

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

EPSS Score

0.4%

Exploitation probability in 30 days

Top 68% most likely to be exploited

Attack Characteristics

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Confidentiality

High

Integrity

High

Availability

None

Published: August 7, 2026 (30 days ago)

Last Modified: August 11, 2026

Source: NVD

Description

Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.

CWE-285

microsoft power apps