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.

Metrics

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.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Seppmail
  • Seppmail Secure Email Gateway

No data.

No data.

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

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
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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published:

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

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

Link: CVE-2026-27445

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

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

Link: CVE-2026-27445

cve-icon Redhat

No data.