CVE-2026-27445 - Vulnerability Details - OpenCVE

SEPPmail Secure Email Gateway before version 15.0.1 does not properly verify that a PGP signature was generated by the expected key, allowing signature spoofing.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact High

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00025.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Seppmail Subscribe	Seppmail Secure Email Gateway Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure

History

Wed, 04 Mar 2026 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 04 Mar 2026 09:15:00 +0000

Type	Values Removed	Values Added
Description		SEPPmail Secure Email Gateway before version 15.0.1 does not properly verify that a PGP signature was generated by the expected key, allowing signature spoofing.
Title		PGP Signature Reflection
First Time appeared		Seppmail Seppmail seppmail Secure Email Gateway
Weaknesses		CWE-347
CPEs		cpe:2.3:a:seppmail:seppmail_secure_email_gateway::::::::
Vendors & Products		Seppmail Seppmail seppmail Secure Email Gateway
References		https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure
Metrics		cvssV4_0 `{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:H/SA:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published: 2026-03-04T08:47:39.953Z

Updated: 2026-03-04T19:26:51.317Z

Reserved: 2026-02-19T13:56:28.869Z

Link: CVE-2026-27445

Vulnrichment

Updated: 2026-03-04T19:26:46.298Z

NVD

Status : Awaiting Analysis

Published: 2026-03-04T09:15:56.660

Modified: 2026-03-04T18:08:05.730

Link: CVE-2026-27445

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-347

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