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CVE-2026-114424— Code execution through double evaluation in address replacement rules

Quick assessment

Affected
SEPPmail AG SEPPmail Secure Email Gateway (SEG)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SEPPmail Secure Email Gateway 15.1.1 之前的版本在发件人或收件人替换规则中，会将攻击者可操控的替换文本当作 Perl 代码执行。当活动规则使用源自邮件内容的替换数据且其搜索条件匹配时，未认证的远程发件人可在邮件处理工作进程上下文中执行操作系统命令。经确认，该工作进程的运行上下文为 root 用户。

CVSS 9.2 · Critical
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I. Basic Information for CVE-2026-114424

Vulnerability Information
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Vulnerability Title
Code execution through double evaluation in address replacement rules
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SEPPmail AG SEPPmail Secure Email Gateway (SEG) 0 ~ 15.1.1 -

II. Public POCs for CVE-2026-114424

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-114424

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Other References for CVE-2026-114424 (1)

Same Patch Batch · SEPPmail AG · 2026-11-04 · 5 CVEs total

CVE-2026-114425 9.2 CRITICAL Forged LFT metadata permits arbitrary file read and deletion
CVE-2026-114426 8.7 HIGH Pre-authentication upload parsing permits resource exhaustion
CVE-2026-114421 8.3 HIGH Empty initial password permits GINA account takeover
CVE-2026-114420 6.9 MEDIUM LDAP wildcard injection exposes GINA recipient accounts

IV. Related Vulnerabilities

Same product: SEPPmail Secure Email Gateway (SEG)
Same vendor: SEPPmail AG
Same weakness: CWE-95