PT-2026-22894 · Seppmail · Seppmail Secure Email Gateway

Andris Suter-Dörig + 2 · Published 2026-03-04 · Updated 2026-03-04 · CVE-2026-2747

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions SEPPmail Secure Email Gateway versions prior to 15.0.1

Description The SEPPmail Secure Email Gateway decrypts inline PGP messages without properly isolating them from unencrypted content. This can lead to the exposure of sensitive information to unauthorized parties.

Recommendations Update to version 15.0.1 or later.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-2747

Affected Products

Seppmail Secure Email Gateway

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-2747 · Security Note
• https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-2747 · Vendor Advisory
• https://twitter.com/infoflowcloud/status/2029127484755616240 · Twitter Post
• https://twitter.com/CVEnew/status/2029125972436390300 · Twitter Post
• https://twitter.com/CVEarity/status/2029237504113881206 · Twitter Post
• https://t.me/CVEtracker/46301 · Telegram Post