CVE-2025-48799
highpriority · track · 10EPSS 0.013 · 69 %ileexploit · PoCDEEUNLRUUSEPSS · scored 2026-10-27
Improper link resolution before file access ('link following') in Windows Update Service 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.
- FixedWindows 10 Version 1607 for 32-bit Systemsmsrc_csaf
10.0.14393.8246:Security Update:https://support.microsoft.com/help/5062560
https://support.microsoft.com/help/5062560 - FixedWindows 10 Version 1607 for x64-based Systemsmsrc_csaf
10.0.14393.8246:Security Update:https://support.microsoft.com/help/5062560
https://support.microsoft.com/help/5062560 - FixedWindows 10 Version 1809 for 32-bit Systemsmsrc_csaf
10.0.17763.7558:Security Update:https://support.microsoft.com/help/5062557
https://support.microsoft.com/help/5062557 - FixedWindows 10 Version 1809 for x64-based Systemsmsrc_csaf
10.0.17763.7558:Security Update:https://support.microsoft.com/help/5062557
https://support.microsoft.com/help/5062557 - FixedWindows 10 Version 21H2 for 32-bit Systemsmsrc_csaf
10.0.19044.6093:Security Update:https://support.microsoft.com/help/5062554
https://support.microsoft.com/help/5062554 - FixedWindows 10 Version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.19044.6093:Security Update:https://support.microsoft.com/help/5062554
https://support.microsoft.com/help/5062554 - FixedWindows 10 Version 21H2 for x64-based Systemsmsrc_csaf
10.0.19044.6093:Security Update:https://support.microsoft.com/help/5062554
https://support.microsoft.com/help/5062554 - FixedWindows 10 Version 22H2 for 32-bit Systemsmsrc_csaf
10.0.19045.6093:Security Update:https://support.microsoft.com/help/5062554
https://support.microsoft.com/help/5062554 - FixedWindows 10 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.19045.6093:Security Update:https://support.microsoft.com/help/5062554
https://support.microsoft.com/help/5062554 - FixedWindows 10 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.19045.6093:Security Update:https://support.microsoft.com/help/5062554
https://support.microsoft.com/help/5062554 - FixedWindows 11 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.22621.5624:Security Update:https://support.microsoft.com/help/5062552
https://support.microsoft.com/help/5062552 - FixedWindows 11 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.22621.5624:Security Update:https://support.microsoft.com/help/5062552
https://support.microsoft.com/help/5062552 - FixedWindows 11 Version 23H2 for ARM64-based Systemsmsrc_csaf
10.0.22631.5624:Security Update:https://support.microsoft.com/help/5062552
https://support.microsoft.com/help/5062552 - FixedWindows 11 Version 23H2 for x64-based Systemsmsrc_csaf
10.0.22631.5624:Security Update:https://support.microsoft.com/help/5062552
https://support.microsoft.com/help/5062552 - FixedWindows 11 Version 24H2 for ARM64-based Systemsmsrc_csaf
10.0.26100.4652:Security Update:https://support.microsoft.com/help/5062553
https://support.microsoft.com/help/5062553 - FixedWindows 11 Version 24H2 for x64-based Systemsmsrc_csaf
10.0.26100.4652:Security Update:https://support.microsoft.com/help/5062553
https://support.microsoft.com/help/5062553 - FixedWindows Server 2025msrc_csaf
10.0.26100.4652:Security Update:https://support.microsoft.com/help/5062553
https://support.microsoft.com/help/5062553 - FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.4652:Security Update:https://support.microsoft.com/help/5062553
https://support.microsoft.com/help/5062553
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (3)
Public proof-of-concept and weaponised exploit code.
- Wh04m1001/CVE-2025-48799Wh04m1001/CVE-2025-48799PoC · poc_in_github
- gmh5225/CVE-2025-48799-Sample exploit of patched vulnerability PoC · poc_in_github
- painoob/CVE-2025-48799painoob/CVE-2025-48799PoC · poc_in_github
affected products (105)
Products and version ranges known to be affected.
advisories (4)
Vendor and ecosystem advisories describing this.
- NCSC-2025-0213Kwetsbaarheden verholpen in Microsoft WindowsNL2025-07-08csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in Windows.
- WID-SEC-W-2025-1495Microsoft Windows: Mehrere SchwachstellenDeutsch2025-07-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Server, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows 10, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows, Microsoft Windows Server 2022, Microsoft Windows 11 und Microsoft Windows Server 2025 ausnutzen, um erhöhte Rechte - sogar administrative Rechte - zu erlangen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen preiszugeben, einen Denial-of-Service-Zustand zu verursachen und Spoofing-Angriffe durchzuführen.
- WID-SEC-W-2025-1850Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2025-08-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
- msrc_CVE-2025-48799Windows Update Service Elevation of Privilege Vulnerability2025-07-08csaf · 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.
references (5)
External citations — patches, advisories, analysis.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48799cnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48799enisa_euvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48799Vendor Advisorynvd
- https://www.vicarius.io/vsociety/posts/cve-2025-48799-detection-script-elevation-of-privilege-vulnerability-in-windows-update-serviceExploitThird Party Advisorynvd
- https://www.vicarius.io/vsociety/posts/cve-2025-48799-mitigation-script-elevation-of-privilege-vulnerability-in-windows-update-serviceExploitMitigationThird Party Advisorynvd
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