CVE-2021-26443

Critical (9.0) in microsoft. EPSS 1.7% chance of exploitation in the next 30 days.

EPSS

1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)

Published

2021-11-10

Modified

2026-08-19

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:windows_10
• microsoft:windows_11
• microsoft:windows_server_2016
• microsoft:windows_server_2019
• microsoft:windows_server_2022

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26443
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26443

Check your stackJSON