CVE-2025-21187

Arbitrary code execution via undisclosed injection

Published Jan 14, 2025 · Updated Jun 9, 2026

Code injection in Microsoft Power Automate for desktop before 2.52.62.25009 allows attackers to execute arbitrary code after user interaction. Microsoft has not disclosed the affected component, the attacker-controlled input, or the operation that incorporates it into generated code. Exploitation requires local access and user interaction, and successful execution grants code execution in the user's security context.

CVSS severity7.8
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Microsoft Power Automate for desktop before 2.52.62.25009 allows attackers to execute arbitrary code after user interaction. Microsoft has not disclosed the affected component, the attacker-controlled input, or the operation that incorporates it into generated code. Exploitation requires local access and user interaction, and successful execution grants code execution in the user's security context.

The record

CVE
CVE-2025-21187
Published
Jan 14, 2025
Updated
Jun 9, 2026
Vendor
Microsoft
Product
Power Automate for desktop
Classifications
CWE-94
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 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=1.0.0.0 <2.52.62.25009

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Power Automate for desktopversion=1.0.0.0 <2.52.62.25009

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')

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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