CVE-2026-29133

CRITICAL

SEPPmail Secure Email Gateway - UID Regex Bypass

Title source: manual
STIX 2.1

Description

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to upload PGP keys with UIDs that do not match their email address.

References (1)

Core 1

Scores

CVSS v3 9.1
EPSS 0.0023
EPSS Percentile 13.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-20
Status published
Products (2)
SEPPmail/Secure Email Gateway < 15.0.3
seppmail/secure_email_gateway < 15.0.3
Published Apr 02, 2026
Tracked Since Apr 02, 2026