CVE-2023-21709 Details
A vulnerability was found in Microsoft Exchange Server 2016 CU23/2019 CU12/2019 CU13 (Groupware Software). It has been classified as very critical. Affected is some unknown processing. Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2023-21709
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
3.58 Probability of exploitation activity being observed over the next 30 days (87th percentile)
CVSS score for CVE-2023-21709
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
9.8 Critical
Products affected by CVE-2023-21709
Exchange Server 2016
Exchange Server 2019
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Not available
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CVE-2023-21709 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
FR 2,261 24.41%
US 1,292 13.95%
DE 1,126 12.15%
RU 752 8.12%
GB 359 3.88%
IT 355 3.83%
CN 228 2.46%
AT 207 2.23%
AU 185 2.00%
CA 148 1.60%

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CVE-2023-21709 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 2,728 74.19%
Technology 536 14.58%
Government/Politics 63 1.71%
Manufacturing 57 1.55%
Business Services 38 1.03%
Utilities 36 0.98%
Finance 31 0.84%
Energy/Resources 30 0.82%
Transportation 21 0.57%
Engineering 19 0.52%

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