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CVE-2026-78043

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 2.7_alpha1 至 2.7.6 中的 Windows 交互式服务（Interactive Service）允许经过身份验证的本地用户通过特制的路径，绕过“受信任的配置目录”限制，从而加载任意配置文件。

CVSS 5.6 · Medium
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I. Basic Information for CVE-2026-78043

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via specially crafted paths
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenVPN OpenVPN 2.7_alpha1 ~ 2.7.6 -

II. Public POCs for CVE-2026-78043

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III. Intelligence Information for CVE-2026-78043

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Vendor Advisories for CVE-2026-78043 (1)

Same Patch Batch · OpenVPN · 2026-09-07 · 8 CVEs total

CVE-2026-84732 8.7 HIGH OpenVPN≤2.7.6 ACK重传溢出致拒绝服务
CVE-2026-84226 8.5 HIGH OpenVPN 2.5.0-2.7.6 Windows 本地二进制植入
CVE-2026-84256 7.7 HIGH OpenVPN 2.1至2.7 Windows参数解析远程命令执行
CVE-2026-78221 5.9 MEDIUM OpenVPN 2.7.6 Windows版缓冲区溢出漏洞
CVE-2026-81830 5.6 MEDIUM OpenVPN 2.4.0-2.6.22 本地服务配置目录约束绕过
CVE-2026-81738 2.3 LOW OpenVPN 2.5.0-2.7.6 Windows版越界写漏洞
CVE-2026-82312 1.8 LOW OpenVPN 2.7.6 Windows IPC空描述符拒绝服务

IV. Related Vulnerabilities

Same product: OpenVPN
Same vendor: OpenVPN
Same weakness: CWE-22

V. Comments for CVE-2026-78043

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