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CVE-2026-20927

Low

No strong exploitation signal.

CVSS base
5.3 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.9%
58.8th percentile
CISA KEV
Not listed
Weakness / dates
CWE-362
Published 2026-01-13 · modified 2026-07-30

CVSS breakdown

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

Attack VectorNNetwork
Attack ComplexityHHigh
Privileges RequiredLLow
User InteractionNNone
ScopeUUnchanged
ConfidentialityNNone
IntegrityNNone
AvailabilityHHigh

Timeline

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to deny service over a network.

Affected

microsoft

References

Official: NVD · CVE.org