SeppMail vulnerabilities
We track 25 vulnerabilities in SeppMail products across 4 products. 25 are rated high or critical, and none are known to be exploited. The most recent was published on November 4, 2026.
Latest SeppMail vulnerabilities
- 8.7 High severity
SEPPmail Secure Email Gateway (SEG): Uncontrolled Resource Consumption
SEPPmail Secure Email Gateway before 15.1.1 processes and writes v1 file-interface upload data before authenticating the caller and without an absolute request-size limit. An unauthenticated remote attacker can occupy workers and consume temporary storage with
- 9.2 Critical severity
SEPPmail Secure Email Gateway (SEG): External Control of File Name or Path
SEPPmail Secure Email Gateway before 15.1.1 trusts a file path supplied in externally provided Large File Transfer attachment metadata. An unauthenticated remote sender can cause the mail-processing worker to disclose, move, or delete an accessible regular fil
- 9.2 Critical severity
SEPPmail Secure Email Gateway (SEG): Improper Neutralization of Directives in Dynamically Evaluated Code
SEPPmail Secure Email Gateway before 15.1.1 can evaluate attacker-influenced replacement text as Perl code in sender or recipient replacement rules. An unauthenticated remote sender can execute operating-system commands in the mail-processing worker context wh
- 8.3 High severity
SEPPmail Secure Email Gateway (SEG): Weak Password Recovery Mechanism for Forgotten Password
SEPPmail Secure Email Gateway before 15.1.1 permits password recovery for a created but unregistered GINA account whose initial password is empty without adequately verifying ownership. A remote unauthenticated attacker who identifies such an account can set a
- 8.6 High severity
SEPPmail Secure Email Gateway (SEG): Improper Neutralization of Special Elements used in an OS Command
SEPPmail Secure Email Gateway before 15.0.6 deserializes attacker-controlled data in a privileged REST import workflow without adequate validation. An attacker with a privileged API token can execute arbitrary commands with "nobody" privileges.
- 7.7 High severity
SEPPmail Secure Email Gateway (SEG): Improper Authentication
SEPPmail Secure Email Gateway before 15.0.7 creates a fully privileged session before required multi-factor authentication enrollment is completed. An attacker with the password for an MFA-required but unenrolled account can access protected functionality with
- 8.6 High severity
Secure Email Gateway: Improper Neutralization of Special Elements used in an OS Command
SEPPmail Secure Email Gateway before 15.0.7 contains a command injection vulnerability that allows authenticated administrators to execute commands with elevated privileges.
- 7.5 High severity
SEPPmail Secure Email Gateway & SEPPmail Cloud: Use of HTTP Request With Sensitive Query String
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.
- 7.1 High severity
Secure Email Gateway: Improper Limitation of a Pathname to a Restricted Directory
SEPPmail versions before 15.0.5 allow improper handling of attachment filenames during encrypted PDF generation. An attacker can exploit this to create new files outside the intended directory, potentially placing files in web-accessible locations.
- 8.3 High severity
Secure Email Gateway: Improper Neutralization of Special Elements Used in a Template Engine
SEPPmail Secure Email Gateway before version 15.0.4 contains a server-side template injection vulnerability in the new GINA UI because an endpoint accepts attacker-controlled template, allowing remote attackers to execute arbitrary template expressions and pot
- 9.3 Critical severity
Secure Email Gateway: Improper Neutralization of Directives in Dynamically Evaluated Code
SEPPmail Secure Email Gateway before version 15.0.2.1 allows unauthenticated remote code execution in the new GINA UI because an endpoint passes attacker-controlled input from a parameter to Perl's eval.
- 8.8 High severity
Secure Email Gateway: External Control of File Name or Path
SEPPmail Secure Email Gateway before version 15.0.4 contains an unauthenticated path traversal vulnerability in the identifier parameter of /api.app/attachment/preview that allows remote attackers to read arbitrary local files and trigger deletion of files in
- 9.2 Critical severity
Secure Email Gateway: Deserialization of Untrusted Data
SEPPmail Secure Email Gateway before version 15.0.4 insecurely deserializes untrusted data, which can be reached from the new GINA UI and may allow unauthenticated remote attackers to execute code via a crafted serialized object.
- 9.3 Critical severity
Secure Email Gateway: Missing Authorization
SEPPmail Secure Email Gateway before version 15.0.4 fails to enforce authorization checks for multiple endpoints in the new GINA UI, allowing unauthenticated remote attackers to access functionality that should require a valid session.
- 9.1 Critical severity
SEPPmail Secure Email Gateway before version 15.0.3 does not properly authenticate the inner…
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.
- 9.8 Critical severity
Secure Email Gateway: Authentication Bypass Using an Alternate Path or Channel
SEPPmail Secure Email Gateway before version 15.0.3 allows account takeover by abusing GINA account initialization to reset a victim account password.
- 7.5 High severity
Secure Email Gateway: Improper Neutralization of Special Elements used in an LDAP Query
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.
- 7.5 High severity
Secure Email Gateway: Missing Authentication for Critical Functionality
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker with access to a victim's GINA account to bypass a second-password check and read protected emails.
- 7.5 High severity
Secure Email Gateway: Improper Neutralization of Special Elements used in an LDAP Query
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.
- 9.8 Critical severity
SeppMail: Improper Limitation of a Pathname to a Restricted Directory
Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). This issue affects SeppMail: 15.0.2.1 and before
- 7.5 High severity
Secure Email Gateway: Exposure of Sensitive Information to an Unauthorized Actor
SEPPmail Secure Email Gateway before version 15.0.1 decrypts inline PGP messages without isolating them from surrounding unencrypted content, allowing exposure of sensitive information to an unauthorized actor.
- 7.5 High severity
Secure Email Gateway: Interpretation Conflict
SEPPmail Secure Email Gateway before version 15.0.1 incorrectly interprets email addresses in the email headers, causing an interpretation conflict with other mail infrastructure that allows an attacker to fake the source of the email or decrypt it.
- 7.5 High severity
SEPPmail Secure Email Gateway before version 15.0.1 does not properly sanitize the headers…
SEPPmail Secure Email Gateway before version 15.0.1 does not properly sanitize the headers from S/MIME protected MIME entities, allowing an attacker to control trusted headers.
- 7.5 High severity
Secure Email Gateway: Improper Limitation of a Pathname to a Restricted Directory
The GINA web interface in SEPPmail Secure Email Gateway before version 15.0.1 does not properly check attachment filenames in GINA-encrypted emails, allowing an attacker to access files on the gateway.
- 8.8 High severity
SEPPmail: Improper Neutralization of Special Elements used in an OS Command
SEPPmail through 12.1.17 allows command injection within the Admin Portal. An authenticated attacker is able to execute arbitrary code in the context of the user root.