7.9

CVE-2021-31206: microsoft exchange_server

CVSS: 7.9v2.0HighModified
Published 14-07-2021Last modified 10-08-2026
Open JSON

Vulnerability summary

CVE-2021-31206 is a high (CVSS 7.9) vulnerability in microsoft exchange_server. EPSS estimates a 13.01% chance of exploitation in the next 30 days, higher than 96.2% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.9/10
010
High · v2.0 (NVD)
EPSS score
13.01%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-07-2021
    PublishedVulnerability first disclosed.
  2. 10-08-2026
    Last modifiedVulnerability information updated.

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

13.01%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

0.00 pp

From 13.01% on 19-09-2026

19-09-202619-10-2026
EPSS score
13.01%

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

3 links