CVE-2025-27489

highpriority · track · 0EPSS 0.006 · 49 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.61% (49th) EPSS

CVSS 7.8 · high

Is it mine?

17 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Improper input validation in Azure Local allows an authorized attacker to elevate privileges locally.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedAzure Stack HCI OS 22H2msrc_csaf
10.0.20348.3328:Security Update:https://support.microsoft.com/help/5055526
https://support.microsoft.com/help/5055526
FixedAzure Stack HCI OS 23H2msrc_csaf
10.0.25398.1486:Security Update:https://learn.microsoft.com/en-us/azure/azure-local/release-information-23h2?view=azloc-2503
https://learn.microsoft.com/en-us/azure/azure-local/release-information-23h2?view=azloc-2503

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · NCSC-NL NL

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20USCWE-20USCWE-20US

affected products (17)

Products and version ranges known to be affected.

Microsoft Azure Local Clusterall versionscert_bundDEcpe:/a:microsoft:azure:local_cluster
Microsoft Azure Stack HCI OS 22H2all versionscert_bundDEcpe:/a:microsoft:azure_stack:hci_os_22h2
Microsoft Azure Stack HCI OS 23H2all versionscert_bundDEcpe:/a:microsoft:azure_stack:hci_os_23h2
Microsoft Windows Admin Center in Azure Portalall versionscert_bundDEcpe:/o:microsoft:windows:admin_center_in_azure_portal
Microsoft Azure Stack HCI OS10.0.25398.0 → 10.0.25398.1486enisa_euvdEU
Microsoft Azure Stack OS HCI10.0.20349.0 → 10.0.20348.3328enisa_euvdEU
Microsoft Corp Azure Stack HCI≤ 22H2fstec_bduRU
Microsoft Corp Azure Stack HCI≤ 23H2fstec_bduRU
Azure Stack HCI OS 22H2all versionsfixedmsrc_csafUS
Azure Stack HCI OS 22H2< 10.0.20348.3328msrc_csafUS
Azure Stack HCI OS 23H2all versionsfixedmsrc_csafUS
Azure Stack HCI OS 23H2< 10.0.25398.1486msrc_csafUS
Azure Stack HCI OS 22H2≤ vers:microsoft/unknownncsc_nlNLcpe:2.3:a:microsoft:azure_stack_hci_os_22h2:*:*:*:*:*:*:*:*
Azure Stack HCI OS 23H2≤ vers:microsoft/unknownncsc_nlNLcpe:2.3:a:microsoft:azure_stack_hci_os_23H2:*:*:*:*:*:*:*:*
microsoft azure local cluster≤ vers:microsoft/unknownncsc_nlNLcpe:2.3:a:microsoft:azure_local_cluster:*:*:*:*:*:*:*:*
microsoft azure stack hci 22h2< 10.0.20348.3328nvdUScpe:2.3:o:microsoft:azure_stack_hci_22h2:*:*:*:*:*:*:*:*
microsoft azure stack hci 23h2< 10.0.25398.1486nvdUScpe:2.3:o:microsoft:azure_stack_hci_23h2:*:*:*:*:*:*:*:*

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2025-0109Kwetsbaarheden verholpen in Microsoft AzureNL2025-04-08csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in diverse Azure producten.
WID-SEC-W-2025-0749Microsoft Azure: Mehrere SchwachstellenDeutsch2025-04-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Azure Stack, Microsoft Azure und Microsoft Windows ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen und vertrauliche Informationen offenzulegen.
msrc_CVE-2025-27489Azure Local Elevation of Privilege Vulnerability2025-04-08csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund msrc_csaf ncsc_nl nvd NVD CVE.org MITRE

published 2025-04-08modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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