CVE-2025-21188: Azure Network Watcher VM Extension Elevation of Privilege Vulnerability

Q: How do I fix CVE-2025-21188?

azure network watcher: upgrade to 1.4.3563.1. Exact commands for each OS are on this page.

Q: Is CVE-2025-21188 being exploited?

CVE-2025-21188 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-2025-21188 affect?

CVE-2025-21188 affects azure network watcher. Severity is medium (CVSS 6.0). Azure Network Watcher VM Extension Elevation of Privilege Vulnerability

Q: How urgent is CVE-2025-21188?

Priority 39/100. On your watchlist

Routine

MEDIUM 6.0WATCHLISTUPGRADE

CVE-2025-21188 is a medium-severity flaw (CVSS 6.0) affecting azure network watcher. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Azure Network Watcher VM Extension Elevation of Privilege Vulnerability

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.0 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-59
Published	2025-02-11
Last modified	2026-06-17

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-11 18:15 UTCPublished CVE record published
2026-06-17 08:42 UTCUpdated Record last modified

microsoft azure network watcher UPGRADE

Affected: < 1.4.3563.1

Fixed in: 1.4.3563.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy azure-network-watcher || rpm -q azure-network-watcher || azure-network-watcher --version

2. UPGRADE to 1.4.3563.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade azure-network-watcher

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade azure-network-watcher

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-2025-21188?

azure network watcher: upgrade to 1.4.3563.1. Exact commands for each OS are on this page.

Is CVE-2025-21188 being exploited?

CVE-2025-21188 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-2025-21188 affect?

CVE-2025-21188 affects azure network watcher. Severity is medium (CVSS 6.0). Azure Network Watcher VM Extension Elevation of Privilege Vulnerability

How urgent is CVE-2025-21188?

Priority 39/100. On your watchlist

Software pages

Azure vulnerabilities

References

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