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CVE-2021-41353

19
FAUCET Score

CVE-2021-41353 is a spoofing vulnerability affecting Microsoft Dynamics 365 (on-premises). With a CVSS score of 5.4 (MEDIUM), it requires user interaction and low privileges, allowing an attacker to potentially trick a user into performing unintended actions, resulting in limited confidentiality and integrity impacts. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity landscape.

Impacted Technologies

VendorProductVersion(s)CPE
9.0CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_365:9.0:*:*:*:on-premises:*:*:*
9.1CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_365:9.1:*:*:*:on-premises:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.90%
Probability of exploitation in next 30 days
EPSS Percentile
55.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0090 is in the 90th percentile among its peer group of 15,239 CVEs.

Social Chatter

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

Media Mentions

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

Remediation

Patch Available

Vendor Patches (3)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics 365 (on-premises) version 9.0Fixed in: 9.0.31.7
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics 365 (on-premises) version 9.1Fixed in: 9.1.4
View patch

Vendor Advisories (1)

microsoft2021-Oct/CVE-2021-41353Important

Microsoft Dynamics 365 (on-premises) Spoofing Vulnerability

Oct 12, 2021

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2021-41353
PatchVendor Advisory