Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-81830

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 2.4.0 至 2.6.22 中的 Windows 交互式服务存在漏洞：由于文件路径验证存在缺陷，本地经过身份验证的用户可借此绕过“可信配置目录”的约束。

CVSS 5.6 · Medium

Possible ATT&CK Techniques 2 AI

T1562 T1548.001 · Setuid and Setgid
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-81830

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The Windows interactive service in OpenVPN 2.4.0 through 2.6.22 allows local authenticated users to bypass the trusted configuration directory constraint via incorrect file path validation
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
文件名或路径的外部可控制
Source: CVE Program / CVE List V5

Affected Products

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

II. Public POCs for CVE-2026-81830

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-81830

请登录查看更多情报信息。

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-2026-81738 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-73

V. Comments for CVE-2026-81830

No comments yet

Leave a comment