Vulnerability
CVE-2025-21391
Microsoft Windows Storage: privilege escalation
Most severe levelNo level of its own
Official data
- CVSS 3.1
- 7.1 · high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:F/RL:O/RC:C - Weakness
- CWE-59
- EPSS
- 2.3% probability of exploitation in the next 30 days, higher than 83% of CVEs
- CISA KEV catalogue
- Yes, since 11 February 2025
Sources: NVD (CVSS, weakness, publication), FIRST (EPSS), CISA (KEV catalogue).
Data read on 4 November 2026.
Timeline
- 11 February 2025Published on NVD
- 11 February 2025Added to the CISA KEV catalogue
In DefenceLevel briefings1 day
- 15 October 2026Worth watching
Last 12 months.
The full analysis is in the briefingThe full analysis is in your archive
Why it matters now, who is affected and what to do: every day at 05:00 UTC, for subscribers.Why it matters, who is affected and what to do, as in the daily briefing.
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