Live › vulnerability › CVE-2025-21391
Go to dashboardA link-following flaw in the Windows Storage component lets a local attacker redirect file operations to protected targets. An attacker can use it to escalate privileges and delete data, which can make the service unavailable.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Windows | vendor | – | – |
| microsoft windows 10 1507 | vendor | < 10.0.10240.20915 | 10.0.10240.20915 |
| microsoft windows 10 1607 | vendor | < 10.0.14393.7785 | 10.0.14393.7785 |
| microsoft windows 10 1809 | vendor | < 10.0.17763.6893 | 10.0.17763.6893 |
| microsoft windows 10 21h2 | vendor | < 10.0.19044.5487 | 10.0.19044.5487 |
| microsoft windows 10 22h2 | vendor | < 10.0.19045.5487 | 10.0.19045.5487 |
| microsoft windows 11 22h2 | vendor | < 10.0.22621.4890 | 10.0.22621.4890 |
| microsoft windows 11 23h2 | vendor | < 10.0.22631.4890 | 10.0.22631.4890 |
| microsoft windows 11 24h2 | vendor | < 10.0.26100.3107 | 10.0.26100.3107 |
| microsoft windows server 2016 | vendor | < 10.0.14393.7785 | 10.0.14393.7785 |
| microsoft windows server 2019 | vendor | < 10.0.17763.6893 | 10.0.17763.6893 |
| microsoft windows server 2022 | vendor | < 10.0.20348.3148 | 10.0.20348.3148 |
| microsoft windows server 2022 23h2 | vendor | < 10.0.25398.1425 | 10.0.25398.1425 |
| microsoft windows server 2025 | vendor | < 10.0.26100.3107 | 10.0.26100.3107 |
Unknown from the sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
This page as .md · .json · in your agent: get_signal("CVE-2025-21391")
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