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CVE-2026-63649

Quick assessment

Affected
OpenVPN OpenVPN
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenVPN是OpenVPN公司开源的一款虚拟专用网络软件。 OpenVPN 2.4.0版本至2.6.21版本和2.7_alpha1版本至2.7.5版本存在输入验证错误漏洞，该漏洞源于Windows交互服务对白名单检查的绕过，可能允许本地经过身份验证的用户绕过受信任配置目录限制并加载任意配置文件。

CVSS 4.1 · Medium EPSS 0.33% · P23

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 2

VendorProduct Version RangeStatus
OpenVPN OpenVPN 2.4.0< 2.6.22 affected
2.7_alpha1< 2.7.6 affected
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I. Basic Information for CVE-2026-63649

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The Windows interactive service in OpenVPN 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via crafted options that bypass whitelist checks
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
宽松定义的白名单
Source: CVE Program / CVE List V5
Vulnerability Title
OpenVPN 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenVPN是OpenVPN公司开源的一款虚拟专用网络软件。 OpenVPN 2.4.0版本至2.6.21版本和2.7_alpha1版本至2.7.5版本存在输入验证错误漏洞，该漏洞源于Windows交互服务对白名单检查的绕过，可能允许本地经过身份验证的用户绕过受信任配置目录限制并加载任意配置文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenVPN OpenVPN 2.4.0 ~ 2.6.22 -

II. Public POCs for CVE-2026-63649

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III. Intelligence Information for CVE-2026-63649

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IV. Related Vulnerabilities

Same product: OpenVPN
Same vendor: OpenVPN
Same weakness: CWE-183

V. Comments for CVE-2026-63649

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