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

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- SEPPmail AG / SEPPmail Secure Email Gateway (SEG): ≥ 0; < 15.1.1 (affected, custom). Source: CNA: NCSC.ch

## Severity and prioritization

- CVSS 4.0: 9.2 (critical); 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: CNA: NCSC.ch

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-95

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://docs.seppmail.com/en/20_revision-history.html (CNA: NCSC.ch)

## Provenance

- CNA: NCSC.ch: https://www.cve.org/CVERecord?id=CVE-2026-114424; retrieved 2026-11-04; source updated 2026-11-04

Revision: 068f2cf37f2205bace0841738596d4906d188d3ce16a0cd272dc3e19662c2c75

Canonical: https://y2.dev/cve/CVE-2026-114424

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