What’s Vulnerable › Vulnerabilities
CVE-2026-84832: Unsafe deserialization in the REST interface
- Severity: high (CVSS 8.6 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-03 · updated 2026-09-04
- Weakness: CWE-78
Description
SEPPmail Secure Email Gateway before 15.0.6 deserializes attacker-controlled data in a privileged REST import workflow without adequate validation. An attacker with a privileged API token can execute arbitrary commands with "nobody" privileges.
Affected products
- SEPPmail AG SEPPmail Secure Email Gateway (SEG): before 15.0.6 — fixed in 15.0.6
How to fix
Upgrade to a fixed version: SEPPmail AG SEPPmail Secure Email Gateway (SEG) 15.0.6. Check the vendor advisory for mitigations.
References
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