CVE-2021-34439

High (7.8) in microsoft. EPSS 2.7% chance of exploitation in the next 30 days.

EPSS

2.7% chance of exploitation in the next 30 days; higher than 85% of CVEs (scores of 2026-10-31)

Published

2021-07-16

Modified

2026-08-10

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:windows_10
• microsoft:windows_server_2016

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34439
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34439

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