What is CVE-2023-21710?

CVE-2023-21710 is a high-severity vulnerability in Microsoft Exchange Server, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2023-02-14.

How severe is CVE-2023-21710?

High severity. CVSS v3 base score is 7.2 out of 10.

Deserialization in Microsoft Exchange Server

CVE-2023-21710

Microsoft Exchange Server Remote Code Execution Vulnerability

Vulnerability class: Insecure Deserialization

EPSS: 0.079 (94.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Exchange_server — versions 2016, 2019
Microsoft Exchange Server 2016 Cumulative Update 23 — versions 15.01.0
Microsoft Exchange Server 2019 Cumulative Update 11 — versions 15.02.0
Microsoft Exchange Server 2019 Cumulative Update 12 — versions 15.02.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

secure@microsoft.com (vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-21710?: CVE-2023-21710 is a high-severity vulnerability in Microsoft Exchange Server, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2023-02-14.
How severe is CVE-2023-21710?: High severity. CVSS v3 base score is 7.2 out of 10.