CVE-2026-114424 PUBLISHED

Code execution through double evaluation in address replacement rules

Assigner: NCSC.ch
Reserved: 21.10.2026 Published: 04.11.2026 Updated: 04.11.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 9.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	SEPPmail AG
Product	SEPPmail Secure Email Gateway (SEG)
Versions	Default: unknown affected from 0 to 15.1.1 (excl.)

Credits

Dario Weiss of InfoGuard Labs finder

References

https://docs.seppmail.com/en/20_revision-history.html

Problem Types

CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') CWE

Impacts

CAPEC-242 Code Injection