CVE-2025-21391

HIGHCVSS 7.1Known Exploited

CISA Known Exploited Vulnerability

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21391 ; https://nvd.nist.gov/vuln/detail/CVE-2025-21391

Remediation deadline: March 4, 2025

Description

Microsoft Windows Storage contains a link following vulnerability that could allow for privilege escalation. This vulnerability could allow an attacker to delete data including data that results in the service being unavailable.

Timeline

Published:February 11th, 2025 6:15 PM

Last modified:September 24th, 2026 1:10 PM

Added to KEV:February 11th, 2025

CVSS Scoring

CVSS v3: 7.1 (HIGH)

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

Affected Software

From NVD CPE configuration data

Vendors

microsoft

Products

windows_10_1507windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_22h2windows_11_23h2windows_11_24h2windows_server_2016windows_server_2019windows_server_2022windows_server_2022_23h2windows_server_2025