CVE-2026-97860 - Yamaha VPN 客戶端未加引號服務路徑特權提升
CVE-2026-97860 - Yamaha VPN Client Unquoted Service Path Privilege Escalation
**Yamaha VPN 客戶端因未加引號服務路徑，允許有寫入系統磁碟許可權的使用者以 SYSTEM 許可權執行任意程式，構成特權提升漏洞。
此漏洞揭示 Yamaha VPN 服務因未加引號路徑可被提升許可權，提醒使用者即時修正服務路徑並限制寫入許可權，並參考官方安全公告以確保系統安全；若無即時修補，系統可能遭受 SYSTEM 許可權執行任意程式。
YMS-VPN8 and YMS-VPN8-CP provided by Yamaha Corporation register Windows services with unquoted file paths. A user who has write permissions on the system drive may be able to execute arbitrary code with SYSTEM privileges.
Impact
Affected Products
The following products are affected by CVE-2026-97860
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.0 | MEDIUM | ede6fdc4-6654-4307-a26d-3331c018e2ce | ||||
| CVSS 3.0 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.0 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | HIGH | ede6fdc4-6654-4307-a26d-3331c018e2ce | ||||
| CVSS 4.0 | HIGH | [email protected] |
Remediate unquoted service paths to prevent privilege escalation.
- Configure services with properly quoted executable paths.
- Ensure service paths are not writable by unauthorized users.
- Restrict write permissions on the system drive.
- Consult vendor advisories for specific configuration steps.
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-97860.
| URL | Resource |
|---|---|
| https://jvn.jp/en/jp/JVN30675482/ | |
| https://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVN30675482.html |
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-97860 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-97860
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-97860 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-97860 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
十月. 29, 2026
Action Type Old Value New Value Added Description YMS-VPN8 and YMS-VPN8-CP provided by Yamaha Corporation register Windows services with unquoted file paths. A user who has write permissions on the system drive may be able to execute arbitrary code with SYSTEM privileges. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-428 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/97xxx/CVE-2026-97860.json">CVE-2026-97860</a> Added Reference https://jvn.jp/en/jp/JVN30675482/ Added Reference https://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVN30675482.html
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.