8.2

CVE-2022-21978: microsoft exchange_server

CVSS: 8.2v3.1HighModified
Published 10-05-2022Last modified 02-01-2025
Open JSON

Vulnerability summary

CVE-2022-21978 is a high (CVSS 8.2) vulnerability in microsoft exchange_server. EPSS estimates a 0.87% chance of exploitation in the next 30 days, higher than 58.1% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (CVE.org)
EPSS score
0.87%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-05-2022
    PublishedVulnerability first disclosed.
  2. 02-01-2025
    Last modifiedVulnerability information updated.

Description

Microsoft Exchange Server Elevation of Privilege Vulnerability

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.87%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

+0.03 pp

From 0.84% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.87%

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