What is the CVSS score of CVE-2025-48820?

CVE-2025-48820 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/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-2025-48820?

CVE-2025-48820 is a privilege escalation vulnerability in Windows AppX Deployment Service that allows authenticated local users to gain elevated system privileges through improper link resolution.. A patch is available.

How to fix or mitigate CVE-2025-48820?

Within 24 hours: Identify and inventory all Windows systems with AppX Deployment Service enabled and document current patch levels. Within 7 days: Apply the vendor-released security patch to all affected Windows systems, prioritizing servers and workstations with sensitive data or elevated-privilege users. Within 30 days: Verify patch deployment across the infrastructure, audit local user access policies, and review privilege escalation logs for suspicious activity.

Windows CVE-2025-48820

EUVD-2025-20587 HIGH

Improper Link Resolution Before File Access (CWE-59)

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 2016 Windows Server 2019 Windows Server 2022 Windows Server 2022 23h2 Windows Server 2025

7.8

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

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

10.0.10240.21073,10.0.19045.6093,10.0.22621.5624

EUVD ID Assigned

Mar 16, 2026 - 04:21 euvd

EUVD-2025-20587

Analysis Generated

Mar 16, 2026 - 04:21 vuln.today

CVE Published

Jul 08, 2025 - 17:15 nvd

HIGH 7.8

DescriptionNVD

Improper link resolution before file access ('link following') in Windows AppX Deployment Service allows an authorized attacker to elevate privileges locally.

Analysis

Improper link resolution before file access ('link following') in Windows AppX Deployment Service allows an authorized attacker to elevate privileges locally.

Technical ContextAI

This vulnerability is classified as Improper Link Resolution Before File Access (CWE-59).

RemediationAI

Monitor vendor advisories for patches. Apply mitigations such as network segmentation, access restrictions, and monitoring.

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CVE-2025-48820 vulnerability details – vuln.today

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Windows CVE-2025-48820

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

Analysis

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code