EUVD-2026-18154

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to hide security tags from users by crafting a long subject...

EUVD-2026-18166

SEPPmail Secure Email Gateway before version 15.0.3 does not properly authenticate the inner message of S/MIME-encrypted MIME entities, allowing an attacker to control trusted headers...

EUVD-2026-18146

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...

CVE-2026-29134

SEPPmail Secure Email Gateway before version 15.0.3 allows an external user to modify GINA webdomain metadata and bypass per-domain restrictions...

CVE-2026-29139

CVE-2026-29139 affects SEPPmail Secure Email Gateway prior to version 15.0.3. The root cause is misuse of GINA account initialization, which can be leveraged to reset a victim’s password and lead to account takeover. Documents indicate a network-exposed vulnerability with high/severe impact (an a...

CVE-2026-29144

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to bypass subject sanitization and forge security tags using Unicode lookalike characters...

CVE-2026-29143

CVE-2026-29143 affects SEPPmail Secure Email Gateway prior to version 15.0.3. The issue is that the inner S/MIME-encrypted MIME entity is not properly authenticated, enabling an attacker to manipulate trusted headers. The root cause is insufficient verification of the inner message, with potentia...

CVE-2026-29143

SEPPmail Secure Email Gateway before version 15.0.3 does not properly authenticate the inner message of S/MIME-encrypted MIME entities, allowing an attacker to control trusted headers...

CVE-2026-29138

SEPPmail Secure Email Gateway before version 15.0.3 allows attackers with a specially crafted email address to claim another user's PGP signature as their own...

CVE-2026-29138 PGP Decryption Sender LDAP Injection

SEPPmail Secure Email Gateway before version 15.0.3 allows attackers with a specially crafted email address to claim another user's PGP signature as their own...

CVE-2026-29131 PGP Decryption Recipient LDAP Injection

SEPPmail Secure Email Gateway before version 15.0.3 allows attackers with a specially crafted email address to read the contents of emails encrypted for other users...

CVE-2026-29131

SEPPmail Secure Email Gateway is affected up to version 15.0.3. A vulnerability in the PGP decryption recipient handling allows attackers who can craft a recipient email address to read emails encrypted for other users. The issue is identified as CVE-2026-29131. Connected sources corroborate the ...

CVE-2026-29137

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to hide security tags from users by crafting a long subject...

CVE-2026-29137 Long Subject Untagging

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to hide security tags from users by crafting a long subject...

CVE-2026-29137

Affected product: SEPPmail Secure Email GatewayVulnerability: An attacker can hide security tags from users by crafting a long subject, affecting versions prior to 15.0.3.Root cause/impact: The long subject enables evasion of displayed security tags; CVSS metrics indicate medium severity with net...

CVE-2026-29141

The CVE affects SEPPmail Secure Email Gateway prior to version 15.0.3 . The issue is an insufficient subject sanitization that allows an attacker to forge tags such as [signed OK] . Documented impact shows no confidentiality impact, but potential integrity impact (subsequent) is HIGH ; attack vec...

CVE-2026-29141 Bounded Subject Tag Sanitization

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to bypass subject sanitization and forge tags such as signed OK...

CVE-2026-29135

SEPPmail Secure Email Gateway is affected by CVE-2026-29135: versions prior to 15.0.3 allow an attacker to craft a password-tag that bypasses subject sanitization. The issue concerns the password-tag handling in the webmail/processing flow (no explicit exploit details provided in the documents). ...

CVE-2026-29140 S/MIME Signature Additional Certificate

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to cause attacker-controlled certificates to be used for future encryption to a victim by adding the certificates to S/MIME signatures...

CVE-2026-29140

CVE-2026-29140 affects SEPPmail Secure Email Gateway prior to version 15.0.3. The issue allows an attacker to cause attacker-controlled certificates to be used for future encryption on a victim by inserting those certificates into S/MIME signatures. The root cause is not explicitly broken out bey...