Buffalo NAS Navigator2 up to 3.11.x on Windows Service unquoted search path

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Buffalo NAS Navigator2 up to 3.11.x on Windows. Affected is an unknown function of the component Service. The manipulation leads to unquoted search path. This vulnerability is documented as CVE-2025-61871. The attack needs to be performed locally. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Buffalo NAS Navigator2 up to 3.11.x on Windows and classified as critical. This issue affects an unknown code of the component Service. The manipulation with an unknown input leads to a unquoted search path vulnerability. Using CWE to declare the problem leads to CWE-428. The product uses a search path that contains an unquoted element, in which the element contains whitespace or other separators. This can cause the product to access resources in a parent path. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

NAS Navigator2 Windows version by BUFFALO INC. registers a Windows service with an unquoted file path. A user with the write permission on the root directory of the system drive may execute arbitrary code with SYSTEM privilege.

The advisory is shared at buffalo.jp. The identification of this vulnerability is CVE-2025-61871 since 10/03/2025. The exploitation is known to be difficult. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1574.009 for this issue.

Upgrading to version 3.12.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202510-1506) and EUVD (EUVD-2025-33659). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.7
CNA Vector (jpcert): 🔒

CVSSv2info

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

Exploitinginfo

Class: Unquoted search path
CWE: CWE-428 / CWE-426
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: NAS Navigator2 3.12.0

Timelineinfo

10/03/2025 CVE reserved
10/10/2025 +7 days Advisory disclosed
10/10/2025 +0 days VulDB entry created
10/12/2025 +2 days VulDB entry last update

Sourcesinfo

Advisory: buffalo.jp
Status: Confirmed

CVE: CVE-2025-61871 (🔒)
GCVE (CVE): GCVE-0-2025-61871
GCVE (VulDB): GCVE-100-327821
EUVD: 🔒
CNNVD: CNNVD-202510-1506 - Buffalo NAS Navigator2 代码问题漏洞

Entryinfo

Created: 10/10/2025 08:33
Updated: 10/12/2025 18:39
Changes: 10/10/2025 08:33 (77), 10/10/2025 21:35 (1), 10/11/2025 16:18 (6), 10/12/2025 18:39 (1)
Complete: 🔍
Cache ID: 216::103

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