CVE-2021-34470

High (8.0) in microsoft exchange server. EPSS 4.4% chance of exploitation in the next 30 days.

EPSS

4.4% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)

Published

2021-07-14

Modified

2026-08-10

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:exchange_server

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34470
• http://packetstormsecurity.com/files/163706/Microsoft-Exchange-AD-Schema-Misconfiguration-Privilege-Escalation.html
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34470

Check your stackJSON