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CVE-2026-7864— Exposure of Sensitive Information to an Unauthorized Actor

Quick assessment

Affected
SEPPmail AG Secure Email Gateway
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.

SEPPmail Secure Email Gateway是德国SEPPmail公司的一个电子邮件安全网关。 SEPPmail Secure Email Gateway 15.0.4之前版本存在安全漏洞，该漏洞源于新GINA UI中未经验证的端点暴露服务器环境变量，可能导致远程攻击者获取敏感系统信息。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.54% · P44

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 1

VendorProduct Version RangeStatus
SEPPmail AG Secure Email Gateway < 15.0.4 affected
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I. Basic Information for CVE-2026-7864

Vulnerability Information
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Vulnerability Title
Exposure of Sensitive Information to an Unauthorized Actor
Source: CVE Program / CVE List V5
Vulnerability Description
SEPPmail Secure Email Gateway before version 15.0.4 exposes server environment variables through an unauthenticated endpoint in the new GINA UI, allowing remote attackers to obtain sensitive system information.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
将系统数据暴露到未授权控制的范围
Source: CVE Program / CVE List V5
Vulnerability Title
SEPPmail Secure Email Gateway 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SEPPmail Secure Email Gateway是德国SEPPmail公司的一个电子邮件安全网关。 SEPPmail Secure Email Gateway 15.0.4之前版本存在安全漏洞，该漏洞源于新GINA UI中未经验证的端点暴露服务器环境变量，可能导致远程攻击者获取敏感系统信息。
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
SEPPmail AG Secure Email Gateway 0 ~ 15.0.4 -

II. Public POCs for CVE-2026-7864

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III. Intelligence Information for CVE-2026-7864

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Security Blog Posts for CVE-2026-7864 (1)

Same Patch Batch · SEPPmail AG · 2026-05-08 · 6 CVEs total

CVE-2026-44127 Local File Inclusion (LFI) and Arbitrary File Deletion
CVE-2026-44125 Missing Authorization in GINAv2
CVE-2026-44128 Unauthenticated Remote Code Execution
CVE-2026-44129 Server-side template injection
CVE-2026-44126 Insecure deserialization

IV. Related Vulnerabilities

Same product: Secure Email Gateway
Same vendor: SEPPmail AG
Same weakness: CWE-497

V. Comments for CVE-2026-7864

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