P4Verified

CVE-2025-59286: 365 copilot chat Version not applicable in the source CPE; +1 more affected products

CVE-2025-59286. CVSS 3.1 base score 9.3 (CRITICAL, Vendor/CNA). EPSS 0.00572 (percentile 0.4542), scored 2026-10-06.

Affected technology

365 copilot chat · Version not applicable in the source CPE
microsoft

Microsoft 365 Copilot's Business Chat · -
Microsoft

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

An unauthorized attacker can disclose information over a network. Vendor/CNA’s CVSS 3.1 assessment (base score 9.3/10) rates confidentiality impact as high; integrity impact as low; availability impact as none.

Published 2026-10-08 17:34:44.756605+00:00

CWE: CWE-77
CCR priority: 37.3 /100 (P4)
CVSS 3.1: 9.3 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N · Vendor/CNA
EPSS: 0.00572 · percentile 0.45526 · 2026-10-08
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-08 17:36:22.845483+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-08 17:32:11.049884+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-59286.html