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CVE-2026-82312

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.

在 Windows 系统中，OpenVPN 2.0.0 至 2.6.22 以及 2.7_alpha1 至 2.7.6 版本存在漏洞，允许经过认证的本地用户通过对命名 IPC（进程间通信）对象设置空 DACL（自主访问控制列表）而导致服务拒绝（DoS）。

CVSS 1.8 · Low

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-82312

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
OpenVPN 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to cause a denial of service via a NULL DACL on named IPC objects
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenVPN OpenVPN 2.0.0 ~ 2.6.22 -

II. Public POCs for CVE-2026-82312

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-82312

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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-2026-78043 5.6 MEDIUM OpenVPN 2.7.6 Windows服务本地配置路径绕过
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

IV. Related Vulnerabilities

Same product: OpenVPN
Same vendor: OpenVPN
Same weakness: CWE-732

V. Comments for CVE-2026-82312

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