SEPPmail Secure Email Gateway/Cloud up to 15.0.4.1 GINA Web Portal authentication replay

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k2.26

Summaryinfo

A vulnerability categorized as critical has been discovered in SEPPmail Secure Email Gateway and Cloud up to 15.0.4.1. The affected element is an unknown function of the component GINA Web Portal. Such manipulation leads to authentication replay. This vulnerability is traded as CVE-2026-9592. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in SEPPmail Secure Email Gateway and Cloud up to 15.0.4.1 and classified as critical. Affected by this issue is an unknown functionality of the component GINA Web Portal. The manipulation with an unknown input leads to a authentication replay vulnerability. Using CWE to declare the problem leads to CWE-294. A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes). Impacted is confidentiality, integrity, and availability. CVE summarizes:

SEPPmail Secure Email Gateway & SEPPmail Cloud before version 15.0.4.2 allows an attacker to replay & hijack a user session in the GINA web portal, as the session token is disclosed inside the URL and a HTTP header.

The advisory is available at downloads.seppmail.com. This vulnerability is handled as CVE-2026-9592 since 05/26/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1040 by the MITRE ATT&CK project.

Upgrading to version 15.0.4.2 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication replay
CWE: CWE-294 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Secure Email Gateway/Cloud 15.0.4.2

Timelineinfo

05/26/2026 CVE reserved
07/17/2026 +52 days Advisory disclosed
07/17/2026 +0 days VulDB entry created
07/17/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: downloads.seppmail.com
Status: Confirmed

CVE: CVE-2026-9592 (🔒)
GCVE (CVE): GCVE-0-2026-9592
GCVE (VulDB): GCVE-100-379814

Entryinfo

Created: 07/17/2026 16:47
Changes: 07/17/2026 16:47 (54)
Complete: 🔍
Cache ID: 216::103

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