CVE-2025-29807Network attack vector

Authenticated code execution via untrusted data deserialization

Published Mar 21, 2025 · Updated Feb 26, 2026

Deserialization of untrusted data in Microsoft Dataverse allows remote authenticated users to execute code through a network request. Microsoft has not disclosed the affected component, serialized data format, or unsafe deserialization operation. Exploitation requires low-privileged access and user interaction, and the published impact is limited to code execution affecting confidentiality and integrity.

CVSS severity8.7
High
EPSS probability1.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization of untrusted data in Microsoft Dataverse allows remote authenticated users to execute code through a network request. Microsoft has not disclosed the affected component, serialized data format, or unsafe deserialization operation. Exploitation requires low-privileged access and user interaction, and the published impact is limited to code execution affecting confidentiality and integrity.

The record

CVE
CVE-2025-29807
Published
Mar 21, 2025
Updated
Feb 26, 2026
Vendor
Microsoft
Product
Microsoft Dataverse
Classifications
CWE-502, CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Dataverseversion=-

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/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

CWE-502Deserialization of Untrusted Data
CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

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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