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Fencer Intel
medium 5.5

CVE-2020-17083 json

Microsoft Exchange Server Remote Code Execution Vulnerability

published 5y ago modified 4mo ago also EUVD-2020-9038

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
12.0%
EPSS 12.0% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

Microsoft Exchange Server Remote Code Execution Vulnerability

Patch / fix

Is CVE-2020-17083 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

11.98% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C
CNA 3.1 5.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

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-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Intel 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.