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TI-2026-84990 Aliases CVE-2026-114424GHSA-3c43-m234-72qw

Code execution through double evaluation in SEPPmail address replacement rules

Priority LOW 39CWE-95Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-95.

Summary

SEPPmail Secure Email Gateway before 15.1.1 evaluates attacker-influenced replacement text as Perl code in sender or recipient replacement rules. An unauthenticated remote sender can run operating-system commands in the mail-processing worker when an active rule uses message-derived replacement data and its search condition matches. The validated worker context was root.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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 when an active rule uses message-derived replacement data and its search condition matches. The validated worker context was root.

Why it matters now

EPSS 0.00262 18th percentileScored 2026-11-07
Fix Fixed SEPPmail Secure Email Gateway (SEG) (SEPPmail AG): 15.1.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
SEPPmailSEPPmail Secure Email Gateway (SEG)before 15.1.115.1.1Patch availableCNA
  • SEPPmail Secure Email Gateway (SEG) VendorSEPPmail Affected before 15.1.1 Fixed in 15.1.1 Patch available CNA

Remediation

Update SEPPmail Secure Email Gateway (SEG) to version 15.1.1.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA SEPPmail Secure Email Gateway (SEG) (SEPPmail AG) Fixed in 15.1.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    SEPPmail Secure Email Gateway (SEG) 15.1.1

    5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-84991 Forged LFT metadata permits arbitrary file read and deletion in SEPPmail SEGPriority MEDIUM 40
    • TI-2026-84994 Pre-authentication upload parsing enables resource exhaustionPriority LOW 38
    • TI-2026-84993 Empty initial password permits GINA account takeover in SEPPmail GatewayPriority LOW 36
    Show all 5 records →

Timeline

  1. 2026-11-04 Threatist record created from CVE-2026-114424
  2. 2026-11-04 Alias added: GHSA-3c43-m234-72qw
  3. 2026-11-05 Priority changed: MEDIUM → LOW

References

Other 1

  • TI-2026-02349 SEPPmail User Web Interface Arbitrary File Write to RCE CVSS 4.0CRITICAL 10.0
  • TI-2026-32138 Local File Inclusion (LFI) and Arbitrary File Deletion CVSS 4.0HIGH 8.8
  • TI-2021-11768 SEPPMail's web frontend, user input is not embedded correctly in the web page and… CVSS 3.1MEDIUM 6.1
  • TI-2021-11767 The SEPPmail solution is vulnerable to a Cross-Site Scripting vulnerability (XSS)… CVSS 3.1MEDIUM 6.1
  • TI-2026-06922 Exposure of Sensitive Information to an Unauthorized Actor CVSS 4.0MEDIUM 6.9
  • TI-2026-32139 Unauthenticated remote code execution in SEPPmail Secure Email Gateway CVSS 4.0CRITICAL 9.3
See all 41 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences