CVE-2026-84830: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in SEPPmail AG Secure Email Gateway
Description
SEPPmail Secure Email Gateway versions before 15.0.7 contain a command injection vulnerability (CWE-78) that allows authenticated administrators to execute OS commands with elevated privileges. This vulnerability has a high severity score of 8.6 and affects all versions from initial up to but not including 15.0.7.
CVSS v4.0
Score 8.6high
Affected software
SEPPmail AG
Secure Email Gateway
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-84830 is a command injection vulnerability in SEPPmail Secure Email Gateway prior to version 15.0.7. It allows authenticated administrators to execute arbitrary OS commands with elevated privileges due to improper neutralization of special elements used in OS commands (CWE-78). The vulnerability requires high privileges to exploit (authenticated administrator) and does not require user interaction. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges required beyond administrator, and high impact on confidentiality, integrity, and availability.
Potential Impact
An attacker with authenticated administrator access can execute arbitrary OS commands with elevated privileges on the affected system, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Upgrade SEPPmail Secure Email Gateway to version 15.0.7 or later, where this vulnerability is fixed. No other mitigation details are provided. Patch status is confirmed by the version range indicating fixed in 15.0.7.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- NCSC.ch
- Date Reserved
- 2026-09-02T11:31:38.548Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9935a4acd9273b49b205a1
Added to database: 09/03/2026, 08:53:56 UTC
Last enriched: 10/09/2026, 21:29:54 UTC
Last updated: 10/17/2026, 18:48:23 UTC
Views: 78
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