CVE-2026-27907
HIGHCVSS 7.8/10EPSS 0.30%
Last modified
CVE-2026-27907 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
Description
Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 11 23h2 | < 10.0.22631.6936 |
| Microsoft | Windows 11 24h2 | < 10.0.26100.8246 |
| Microsoft | Windows 11 25h2 | < 10.0.26200.8246 |
| Microsoft | Windows 11 26h1 | < 10.0.28000.1836 |
| Microsoft | Windows Server 2022 23h2 | < 10.0.25398.2274 |
| Microsoft | Windows Server 2025 | < 10.0.26100.32690 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-27907?
Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-27907?
CVE-2026-27907 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.
How do I fix CVE-2026-27907?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-27907?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST