---
id: CVE-2026-114424
title: Code execution through double evaluation in address replacement rules
summary: >-
  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-proce…
severity: critical
cvss: 9.2
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-95
vendor: SEPPmail AG
product: SEPPmail Secure Email Gateway (SEG)
affected:
  - seppmail_secure_email_gateway_seg < 15.1.1
published: '2026-11-04'
updated: '2026-11-04'
sourceUpdated: '2026-11-04T08:31:54.245Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114424'
references:
  - url: 'https://docs.seppmail.com/en/20_revision-history.html'
tags:
  - cve.org
epss: 0.00262
epssPercentile: 0.18122
ingestedAt: '2026-11-05T20:33:06.722Z'
---

## Overview

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.

## Affected

- `seppmail_secure_email_gateway_seg < 15.1.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.