CVE-2021-41353Network attack vector

Authenticated content spoofing

Published Oct 13, 2021 · Updated Aug 4, 2024

Spoofing in Microsoft Dynamics 365 on-premises 9.0 and 9.1 allows remote authenticated users to cause unspecified effects via unspecified vectors. Microsoft has not published the affected component or how it mishandles attacker-controlled input. Exploitation requires low privileges and another user's interaction, but public records do not identify the data exposed or altered.

CVSS severity5.4
Medium
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Spoofing in Microsoft Dynamics 365 on-premises 9.0 and 9.1 allows remote authenticated users to cause unspecified effects via unspecified vectors. Microsoft has not published the affected component or how it mishandles attacker-controlled input. Exploitation requires low privileges and another user's interaction, but public records do not identify the data exposed or altered.

The record

CVE
CVE-2021-41353
Published
Oct 13, 2021
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Microsoft Dynamics 365 (on-premises) version 9.1
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.0 <9.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Dynamics 365 (on-premises) version 9.1version=9.0 <9.1.4
Microsoft · Microsoft Dynamics 365 (on-premises) version 9.0version=9.0.0 <9.0.31.7

Published CVSS scores

5.4Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
3.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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