Vulnerability Intelligence Report
Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2023-21707
Microsoft Exchange Server Remote Code Execution Vulnerability
Deserialization
No Active Exploit Signals
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:82.02%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-502 ↗CWE-502: Deserialization of Untrusted Data
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 | 15.00.0 < 15.00.1497.048 (affected) |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0 < 15.01.2507.023 (affected) |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 11 | 15.02.0 < 15.02.0986.042 (affected) |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 12 | 15.02.0 < 15.02.1118.026 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2022-12-13T18:08:03 |
| Published | 2023-02-14T19:32:45 |
| Patch Date | 2023-02-14 |
| Last Updated | 2026-08-19T16:26:37 |
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