PT-2026-22893 · Seppmail · Seppmail Secure Email Gateway

Andris Suter-Dörig + 2 · Published 2026-03-04 · Updated 2026-03-04 · CVE-2026-2746

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA: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 does not correctly report the results of PGP signature verification. This can prevent users from identifying potentially forged emails.

Recommendations Update to version 15.0.1 or later.

Fix

Improper Verification of Cryptographic Signature

Weakness Enumeration

CWE-347

Related Identifiers

CVE-2026-2746

Affected Products

Seppmail Secure Email Gateway

References · 7

• https://osv.dev/vulnerability/CVE-2026-2746 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-2746 · Security Note
• https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure · Vendor Advisory
• https://twitter.com/infoflowcloud/status/2029127517743861947 · Twitter Post
• https://twitter.com/CVEarity/status/2029237222944436350 · Twitter Post
• https://twitter.com/CVEnew/status/2029125975070449973 · Twitter Post
• https://t.me/CVEtracker/46300 · Telegram Post