CVE-2022-21891

FAUCET Score

CVE-2022-21891 is a spoofing vulnerability affecting Microsoft Dynamics 365 (on-premises) Sales. With a CVSS score of 4.3 (MEDIUM), it requires user interaction and could lead to low integrity impact, though confidentiality and availability are not affected. There is no public exploit code available, it is not listed on the KEV catalog, and community discussion and media coverage are minimal, indicating low current attention and exploitation.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:dynamics_365_sales:-:::::::*

CVSS Data

CVSS version used by this source: 3.1

7.6HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

2.3

Impact Score

4.7

CvssVersion

3.1

Exploit Intelligence

EPSS Score

1.51%

Probability of exploitation in next 30 days

EPSS Percentile

71.7%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0151 is in the 84th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

microsoft2022-Jan/CVE-2022-21891Important

Microsoft Dynamics 365 (on-premises) Spoofing Vulnerability

Jan 11, 2022

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2022-21891

msrc.microsoft.com / update-guide/vulnerability/CVE-2022-21891