CVE-2025-26627Public exploit

Privilege escalation via writable temporary installer paths

Published Mar 11, 2025 · Updated Feb 13, 2026

Command injection in Microsoft Azure Arc 1.0.0 through 1.0.9 allows local users to execute code with elevated privileges. The installer scripts copy or download payloads into user-writable temporary directories and then execute those paths without ensuring the privileged process received the intended file. A low-privileged foothold and a privileged installation, GPO refresh, or agent update are required; successful replacement runs attacker-controlled code as root or NT AUTHORITY\SYSTEM.

CVSS severity7.0
High
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Microsoft Azure Arc 1.0.0 through 1.0.9 allows local users to execute code with elevated privileges. The installer scripts copy or download payloads into user-writable temporary directories and then execute those paths without ensuring the privileged process received the intended file. A low-privileged foothold and a privileged installation, GPO refresh, or agent update are required; successful replacement runs attacker-controlled code as root or NT AUTHORITY\SYSTEM.

The record

CVE
CVE-2025-26627
Published
Mar 11, 2025
Updated
Feb 13, 2026
Vendor
Microsoft
Product
Azure Arc
Classifications
CWE-77, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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 <1.0.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Azure Arcversion=1.0.0 <1.0.10

Published CVSS scores

7.0Microsoft CorporationCVSS:3.1/AV:L/AC:H/PR:L/UI:N/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.

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No observations available

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

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1068Exploitation for Privilege Escalation

Public exploit references

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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