CVE-2026-2747

HIGH
2026-03-04 [email protected]
7.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:05 vuln.today
CVE Published
Mar 04, 2026 - 09:15 nvd
HIGH 7.5

Tags

Information Disclosure Seppmail

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.

Analysis

SEPPmail Secure Email Gateway versions prior to 15.0.1 fail to properly isolate decrypted PGP message content from surrounding plaintext, enabling attackers to access encrypted sensitive information over the network without authentication. This high-severity flaw affects organizations relying on SEPPmail for secure email handling and exposes confidential data despite encryption protections. …

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Remediation

Within 24 hours: Identify all SEPPmail deployments and confirm version numbers; notify business stakeholders of potential exposure risk. Within 7 days: Implement network segmentation to restrict gateway access, disable inline PGP decryption if operationally feasible, and monitor email logs for suspicious access patterns. …

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Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +38
POC: 0

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CVE-2026-2747 vulnerability details – vuln.today
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