CVE-2023-21709 in the critical feed json
Microsoft Exchange Server Elevation of Privilege Vulnerability
published 2023-08-08 3 y ago modified 2026-08-10 2 mo ago also EUVD-2023-25876
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
Microsoft Exchange Server Elevation of Privilege Vulnerability
Patch / fix
- Microsoft Microsoft Exchange Server 2016 Cumulative Update 23 15.01.2507.032
- Microsoft Microsoft Exchange Server 2019 Cumulative Update 12 15.02.1118.037
- Microsoft Microsoft Exchange Server 2019 Cumulative Update 13 15.02.1258.025
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 20 mo ago
Exploit prediction
1.98% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Microsoft Exchange Server 2016 Cumulative Update 23
- Microsoft Microsoft Exchange Server 2019 Cumulative Update 12
- Microsoft Microsoft Exchange Server 2019 Cumulative Update 13
Classification
- Weakness
-
- CWE-307 Improper Restriction of Excessive Authentication Attempts
- Technology feeds
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2023-21709
vendor-advisory, patch
Sources
- CVE List CVE-2023-21709
- NVD CVE-2023-21709
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