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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-0394

Quick assessment

Affected
Open-Xchange GmbH OX Dovecot Pro
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.

Open-Xchange OX Dovecot Pro是德国Open-Xchange公司的一个邮件存储与投递系统。 Open-Xchange OX Dovecot Pro存在安全漏洞，该漏洞源于配置使用每域passwd文件时存在路径遍历问题，可能导致错误读取/etc/passwd文件。

CVSS 5.3 · Medium EPSS 0.43% · P35

Possible ATT&CK Techniques 2 AI

T1552.006 · Group Policy Preferences T1155
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-0394

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or slash has been added to allowed characters, path traversal can happen if the domain component is directory partial. This allows inadvertently reading /etc/passwd (or some other path which ends with passwd). If this file contains passwords, it can be used to authenticate wrongly, or if this is userdb, it can unexpectly make system users appear valid users. Upgrade to fixed version, or use different authentication scheme that does not rely on paths. Alternatively you can also ensure that the per-domain passwd files are in some other location, such as /etc/dovecot/auth/%d. No publicly available exploits are known.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A: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
Vulnerability Title
Open-Xchange OX Dovecot Pro 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open-Xchange OX Dovecot Pro是德国Open-Xchange公司的一个邮件存储与投递系统。 Open-Xchange OX Dovecot Pro存在安全漏洞，该漏洞源于配置使用每域passwd文件时存在路径遍历问题，可能导致错误读取/etc/passwd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
Open-Xchange GmbH OX Dovecot Pro 0 ~ 2.3.0 -

II. Public POCs for CVE-2026-0394

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-0394

请登录查看更多情报信息。

Same Patch Batch · Open-Xchange GmbH · 2026-03-27 · 11 CVEs total

CVE-2026-24031 7.7 HIGH Open-Xchange OX Dovecot Pro 安全漏洞
CVE-2026-27858 7.5 HIGH Open-Xchange OX Dovecot Pro 安全漏洞
CVE-2025-59032 7.5 HIGH Open-Xchange OX Dovecot Pro 安全漏洞
CVE-2026-27856 7.4 HIGH Open-Xchange OX Dovecot Pro 安全漏洞
CVE-2026-27855 6.8 MEDIUM Open-Xchange OX Dovecot Pro 安全漏洞
CVE-2026-27859 5.3 MEDIUM Open-Xchange OX Dovecot Pro 安全漏洞
CVE-2025-59028 5.3 MEDIUM Open-Xchange OX Dovecot Pro 安全漏洞
CVE-2026-27857 4.3 MEDIUM Open-Xchange OX Dovecot Pro 安全漏洞
CVE-2025-59031 4.3 MEDIUM Open-Xchange OX Dovecot Pro 安全漏洞
CVE-2026-27860 3.7 LOW Open-Xchange OX Dovecot Pro 安全漏洞

IV. Related Vulnerabilities

Same product: OX Dovecot Pro
Same vendor: Open-Xchange GmbH
Same weakness: CWE-22

V. Comments for CVE-2026-0394

No comments yet

Leave a comment