CVE-2026-26117 | BDVDB-2026-319591 Detail

MicrosoftArc Enabled Servers - Azure Connected Machine Agent

Description#

Authentication bypass using an alternate path or channel in Azure Windows Virtual Machine Agent allows an authorized attacker to elevate privileges locally.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-288 Authentication Bypass Using an Alternate Path or Channel

References#

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26117

Exploit#

No public exploit known

History#

Version 12026-03-10Record published in the CVE List.
Version 22026-06-19Most recent update recorded in the CVE List.

Published

Published: 2026-03-10
Last modified: 2026-06-19

Vendor information

Vendor: Microsoft
Product: Arc Enabled Servers - Azure Connected Machine Agent

All Microsoft vulnerabilities

Score

7.8 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 41.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 1.0.0 and < 1.61
Fixed
1.61

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).