Vulnerability · Published May 8, 2026 · Assigned by NCSC.ch
CVE-2026-7864Exposure of Sensitive Information to an Unauthorized Actor
Medium 6.9
In plain English
A medium-severity security flaw in Secure Email Gateway from SEPPmail AG. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 16.1% (higher than 97% of all known vulnerabilities).
Severity (CVSS 4.0)6.9Medium
Exploit odds (30 days)16.1%top 3.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
SEPPmail Secure Email Gateway before version 15.0.4 exposes server environment variables through an unauthenticated endpoint in the new GINA UI, allowing remote attackers to obtain sensitive system information.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| SEPPmail AG | Secure Email Gateway | 0 – before 15.0.4 |
Weakness: CWE-497 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N