9.1

CVE-2020-17142: microsoft exchange_server

CVSS: 9.1v3.1CriticalModified
Published 09-12-2020Last modified 09-06-2026
Open JSON

Vulnerability summary

CVE-2020-17142 is a critical (CVSS 9.1) vulnerability in microsoft exchange_server. EPSS estimates a 3.37% chance of exploitation in the next 30 days, higher than 88.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
3.37%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-12-2020
    PublishedVulnerability first disclosed.
  2. 09-06-2026
    Last modifiedVulnerability information updated.

Description

Microsoft Exchange Remote Code Execution Vulnerability

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

3.37%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

0.00 pp

From 3.37% on 20-09-2026

20-09-202620-10-2026
EPSS score
3.37%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Microsoft6 products

1 vendor · 6 products

References

2 links