Vulnerability · NVD

CVE-2026-21260

CVE-2026-21260, high severity (CVSS 7.5): 3 tracked apps concerned, all fixed or indeterminable on their current version.

Severity (CVSS): 7.5
Exploitation: 1.4 %
Tracked apps: 3
Still exposed: 0

Published on 2026-02-10

Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

Attack vector : Network No privileges required No user interaction

Show raw CVSS vector

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

EPSS 1.43% above median percentile 71.0%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

Microsoft Office macOS brew:cask:microsoft-office

Affected - Fixed in - Latest tracked 16.112.26082125 undetermined
Microsoft Outlook macOS com.microsoft.Outlook

Affected - Fixed in - Latest tracked 16.112.26081720 undetermined
Microsoft Office Windows winget:Microsoft.Office

Affected - Fixed in - Latest tracked - undetermined

Vulnerable CPE configurations (16)

Vendor	Product	Platform	Versions	CPE 2.3 URI
microsoft	office All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office:2019::::::x64:
microsoft	office All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office:2019::::::x64:
microsoft	office All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office:2019::::::x86:
microsoft	office All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office:2019::::::x86:
microsoft	office_long_term_servicing_channel All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:::::-:x64:*
microsoft	office_long_term_servicing_channel All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:::::-:x64:*
microsoft	office_long_term_servicing_channel All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:::::-:x86:*
microsoft	office_long_term_servicing_channel All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:::::-:x86:*
microsoft	office_long_term_servicing_channel All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:::::-:x64:*
microsoft	office_long_term_servicing_channel All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:::::-:x64:*
microsoft	office_long_term_servicing_channel All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:::::-:x86:*
microsoft	office_long_term_servicing_channel All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:::::-:x86:*
microsoft	outlook All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:outlook:2016::::::x64:
microsoft	outlook All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:outlook:2016::::::x64:
microsoft	outlook All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:outlook:2016::::::x86:
microsoft	outlook All platforms (wildcard)	All platforms (wildcard)	-	cpe:2.3:a:microsoft:outlook:2016::::::x86:

View on NVD ↗ Advisory · msrc.microsoft.com