CVE-2026-40381: Improper access control in Azure Connected Machine Agent allows an authorized attacker to elevate privileges l

Q: How do I fix CVE-2026-40381?

azure connected machine agent: upgrade to 1.63. Exact commands for each OS are on this page.

Q: Is CVE-2026-40381 being exploited?

CVE-2026-40381 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-40381 affect?

CVE-2026-40381 affects azure connected machine agent. Severity is high (CVSS 7.8). Improper access control in Azure Connected Machine Agent allows an authorized attacker to elevate privileges locally.

Q: How urgent is CVE-2026-40381?

Priority 35/100. High severity; On your watchlist

Routine

HIGH 7.8WATCHLISTUPGRADE

CVE-2026-40381 is a high-severity flaw (CVSS 7.8) affecting azure connected machine agent. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper access control in Azure Connected Machine Agent allows an authorized attacker to elevate privileges locally.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 88%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-05-12
Last modified	2026-10-26

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-12 18:17 UTCPublished CVE record published
2026-10-26 18:10 UTCUpdated Record last modified

microsoft azure connected machine agent UPGRADE

Affected: < 1.63

Fixed in: 1.63

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy azure-connected-machine-agent || rpm -q azure-connected-machine-agent || azure-connected-machine-agent --version

2. UPGRADE to 1.63 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade azure-connected-machine-agent

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade azure-connected-machine-agent

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-40381?

azure connected machine agent: upgrade to 1.63. Exact commands for each OS are on this page.

Is CVE-2026-40381 being exploited?

CVE-2026-40381 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-40381 affect?

CVE-2026-40381 affects azure connected machine agent. Severity is high (CVSS 7.8). Improper access control in Azure Connected Machine Agent allows an authorized attacker to elevate privileges locally.

How urgent is CVE-2026-40381?

Priority 35/100. High severity; On your watchlist

Software pages

Azure vulnerabilities

Related CVEs

CVE-2026-47632 HIGH 8.8 DOWNGRADE Improper certificate validation in Azure Connected Machine Agent allows an unauthorized attacker to elevate pr

References

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