CVE-2020-17084 json
Microsoft Exchange Server Remote Code Execution Vulnerability
published 2020-11-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-9039
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.9%
- EPSS 3.9% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
Summary
Microsoft Exchange Server Remote Code Execution Vulnerability
Patch / fix
Exploit prediction
3.85% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 8.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Affected products
- Microsoft Microsoft Exchange Server 2019 Cumulative Update 6
- Microsoft Microsoft Exchange Server 2016 Cumulative Update 17
- Microsoft Microsoft Exchange Server 2019 Cumulative Update 7
- Microsoft Microsoft Exchange Server 2016 Cumulative Update 18
- Microsoft Microsoft Exchange Server 2013 Cumulative Update 23
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
- Technology feeds
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2020-17084
patch, vendor-advisory
Sources
- CVE List CVE-2020-17084
- NVD CVE-2020-17084
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.