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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-2747— PGP Mixed Plaintext and Encrypted Content

Quick assessment

Affected
SEPPmail 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 15.0.1之前版本存在安全漏洞，该漏洞源于解密内联PGP消息时未将其与周围未加密内容隔离，可能导致敏感信息暴露给未经授权的参与者。

AI Predicted 7.5 Difficulty: Easy EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1115 · Clipboard Data
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-2747

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
PGP Mixed Plaintext and Encrypted Content
Source: CVE Program / CVE List V5
Vulnerability Description
SEPPmail Secure Email Gateway before version 15.0.1 decrypts inline PGP messages without isolating them from surrounding unencrypted content, allowing exposure of sensitive information to an unauthorized actor.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
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 15.0.1之前版本存在安全漏洞，该漏洞源于解密内联PGP消息时未将其与周围未加密内容隔离，可能导致敏感信息暴露给未经授权的参与者。
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 Secure Email Gateway 0 ~ 15.0.1 -

II. Public POCs for CVE-2026-2747

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-2747

请登录查看更多情报信息。

Other References for CVE-2026-2747 (1)

Same Patch Batch · SEPPmail · 2026-03-04 · 8 CVEs total

CVE-2026-27441 PDF Password CMDi
CVE-2026-27444 Header Email Address Parsing
CVE-2026-27442 zip_attachments Path Traversal
CVE-2026-27443 S/MIME Decryption Tag Sanitization Bypass
CVE-2026-27445 PGP Signature Reflection
CVE-2026-2748 S/MIME Certificate Subject Whitespace
CVE-2026-2746 Missing PGP Signature Tag

IV. Related Vulnerabilities

Same product: Secure Email Gateway
Same vendor: SEPPmail
Same weakness: CWE-200

V. Comments for CVE-2026-2747

No comments yet

Leave a comment