CVE-2021-26858

High · CVSS 7.8EPSS 89.5%CISA KEV

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Microsoft Exchange Server Remote Code Execution Vulnerability

NVD only has a brief summary for this one — the community fills in the real-world detail below.

References

Published Mar 3, 2021

Community ground truth

Community verdict

3 verdicts

Not a real issue

to add your verdict.

Community real-world severity: Critical (Critical 3) — CVSS base score 7.8

Practitioners rate this higher than its CVSS — treat with extra caution.

Verdicts are the quick signal — notes are the evidence and fixes behind them.

No notes yet — be the first to share what you saw or a fix that worked.