CVE-2025-48820
Published: 08 July 2025
Summary
CVE-2025-48820 is a high-severity Link Following (CWE-59) vulnerability in Microsoft Windows 10 1507. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 19.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The vulnerability CVE-2025-48820 is an improper link resolution before file access, categorized as link following under CWE-59, that affects the Windows AppX Deployment Service. It carries a CVSS 3.1 base score of 7.8 reflecting local attack vector, low complexity, and low required privileges.
An authorized local attacker can exploit the flaw to elevate privileges on the target system, achieving high impact on confidentiality, integrity, and availability without user interaction.
The Microsoft Security Response Center advisory published at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48820 addresses the issue and supplies remediation guidance.
The associated EPSS score remains flat at a low value of 0.0130 with no material rise after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-20587
Vulnerability details
Improper link resolution before file access ('link following') in Windows AppX Deployment Service allows an authorized attacker to elevate privileges locally.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.