What is the CVSS score of CVE-2025-48819?

CVE-2025-48819 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Windows are affected by CVE-2025-48819?

CVE-2025-48819 affects Windows UPnP Device Host, enabling authorized attackers on adjacent networks to escalate privileges through insecure memory handling.. A patch is available.

How to fix or mitigate CVE-2025-48819?

Within 24 hours: Identify all Windows systems running UPnP Device Host using network inventory tools and disable UPnP if not operationally required. Within 7 days: Apply vendor-released patch to all systems where UPnP must remain enabled; consult Microsoft security advisories for specific KB article and Windows version patch versions. Within 30 days: Implement network segmentation to restrict UPnP traffic to trusted adjacent network segments only and conduct privilege escalation testing on remediated systems.

Windows CVE-2025-48819

EUVD-2025-20588 HIGH

Sensitive Data Storage in Improperly Locked Memory (CWE-591)

2025-07-08 secure@microsoft.com

Windows Information Disclosure Microsoft Windows 10 1507 Windows 10 1607 Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 22h2 Windows 11 23h2 Windows 11 24h2 Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2022 23h2 Windows Server 2025

7.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.1 HIGH

AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:32 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

10.0.14393.8246,10.0.26100.4652,6.1.7601.27820

EUVD ID Assigned

Mar 16, 2026 - 04:21 euvd

EUVD-2025-20588

Analysis Generated

Mar 16, 2026 - 04:21 vuln.today

CVE Published

Jul 08, 2025 - 17:15 nvd

HIGH 7.1

DescriptionCVE.org

Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges over an adjacent network.

Analysis

Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges over an adjacent network.

Technical ContextAI

Information disclosure occurs when an application inadvertently reveals sensitive data to unauthorized actors through error messages, logs, or improper access controls.