CVE-2026-21508

HIGH 7.0EPSS 0.4%

Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally.

CVSS v3.1: 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1: 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.43% chance of exploitation in the next 30 days, 36th percentile
Published: 2026-02-10
Updated: 2026-08-19

Proof-of-concept exploits (1)

0xc4r/CVE-2026-21508_POC

References

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