CVE-2021-40456

Medium (5.3) in microsoft. EPSS 2.3% chance of exploitation in the next 30 days.

EPSS

2.3% chance of exploitation in the next 30 days; higher than 83% of CVEs (scores of 2026-10-31)

CWE

CWE-863

Published

2021-10-13

Modified

2026-06-17

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:windows_server
• microsoft:windows_server_2019
• microsoft:windows_server_2022

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40456
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40456

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