CVE-2026-2747

PGP Mixed Plaintext and Encrypted Content

Severity Score

6.9

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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.

*Credits: Andris Suter-Dörig, Matteo Scarlata, Kenny Paterson

CVSS Scores

Switzerland Government Common Vulnerability Programv4 6.9

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

Present

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

Low

High

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2026-02-19 CVE Reserved
2026-03-04 CVE Published
2026-03-04 CVE Updated
2026-03-04 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

CAPEC-116: Excavation

References (1)

URL	Tag	Source
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure	Release Notes

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
SEPPmail Search vendor "SEPPmail"		Secure Email Gateway Search vendor "SEPPmail" for product "Secure Email Gateway"				< 15.0.1 Search vendor "SEPPmail" for product "Secure Email Gateway" and version " < 15.0.1"		en		Affected