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CVE-2021-27065

High · CVSS 7.8EPSS 99.9%CISA KEVCWE-22 · Path Traversal

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

NVD MITRE CVE.org CISA KEV

Published

Community ground truth

Community verdict

2 verdicts
Not a real issue

Includes TruePositive's curated baseline from public sources — community verdicts accrue on top.

to add your verdict.

Community real-world severity: Critical (Critical 2) — CVSS base score 7.8

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

Field notes & remediation

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

  • 0
    Field note · Waleed AzizCurated

    Confirmed exploited in the wild — listed in the CISA KEV catalog (added 2021-11-03). Linked to known ransomware campaigns. Treat as real and prioritize patching over triage.