CVE-2023-21707

HIGHNVD 8.88.8—Elevated

8.8

Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 98.8%
KEV: Not listed

Published

February 14, 2023

Last Modified

November 21, 2024

References (2)

secure@microsofthttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21707
af854a3a-2127-422b-91ae-364da2661108https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21707

Frequently asked(5)

What is CVE-2023-21707?

CVE-2023-21707 is a high vulnerability published on February 14, 2023. Microsoft Exchange Server Remote Code Execution Vulnerability

When was CVE-2023-21707 disclosed?

CVE-2023-21707 was first published in the National Vulnerability Database on February 14, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-21707 actively exploited?

CVE-2023-21707 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-21707?

CVE-2023-21707 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2023-21707?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-21707, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2023-21707

📅 Published

🔄 Last Modified

🔗 References (2)