CVE-2021-26877

Critical (9.8) in microsoft. EPSS 17% chance of exploitation in the next 30 days.

EPSS

17% chance of exploitation in the next 30 days; higher than 97% of CVEs (scores of 2026-10-31)

Published

2021-03-11

Modified

2026-08-19

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:windows_server_2008
• microsoft:windows_server_2012
• microsoft:windows_server_2016
• microsoft:windows_server_2019

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26877
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26877

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