Microsoft Windows up to Server 2025 Update Service link following

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in Microsoft Windows up to Server 2025 and classified as critical. The impacted element is an unknown function of the component Update Service. Performing a manipulation results in link following. This vulnerability is known as CVE-2025-48799. Attacking locally is a requirement. Furthermore, an exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows up to Server 2025. It has been classified as critical. This affects an unknown part of the component Update Service. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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

The weakness was published 07/08/2025 as confirmed security update guide (Website). The advisory is shared at msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2025-48799. The exploitability is told to be easy. An attack has to be approached locally. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Filip Dragović (Wh04m1001) in C++ and been published before and not just after the advisory. The exploit is shared for download at github.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 241563 (KB5062554: Windows 10 version 21H2 / Windows 10 Version 22H2 Security Update (July 2025)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (241563), EUVD (EUVD-2025-20603) and CERT Bund (WID-SEC-2025-1850). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Xerox FreeFlow Print Server

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

Video

Link: github.com

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.8
Vendor Vector (Microsoft): 🔒

CNA Base Score: 7.8
CNA Vector (Microsoft): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Author: Filip Dragović (Wh04m1001)
Programming Language: 🔒
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 241563
Nessus Name: KB5062554: Windows 10 version 21H2 / Windows 10 Version 22H2 Security Update (July 2025)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Timelineinfo

07/08/2025 Exploit disclosed
07/08/2025 +0 days VulDB entry created
07/08/2025 +0 days Advisory disclosed
07/08/2025 +0 days Countermeasure disclosed
09/15/2025 +69 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2025-48799 (🔒)
GCVE (CVE): GCVE-0-2025-48799
GCVE (VulDB): GCVE-100-315465
EUVD: 🔒
CERT Bund: WID-SEC-2025-1850 - Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

scip Labs: https://www.scip.ch/en/?labs.20161215

Entryinfo

Created: 07/08/2025 19:19
Updated: 09/15/2025 22:26
Changes: 07/08/2025 19:19 (9), 07/08/2025 19:20 (26), 07/08/2025 19:23 (34), 07/09/2025 07:38 (2), 07/09/2025 13:32 (7), 07/09/2025 13:33 (2), 07/09/2025 13:36 (7), 07/20/2025 04:11 (1), 08/16/2025 18:28 (7), 09/15/2025 22:26 (12)
Complete: 🔍
Committer: misc
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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