CVE-2026-7864Public exploitNetwork attack vector

Unauthenticated environment disclosure via GINA debug endpoint

Published May 8, 2026 · Updated May 8, 2026

Information disclosure in SEPPmail Secure Email Gateway before 15.0.4 allows remote attackers to read server environment variables. The unauthenticated GINA V2 /api.app/hello handler accepts op=env and returns the complete process environment instead of restricting the debug operation. The new GINA V2 interface must be explicitly enabled, after which a single remote GET request discloses sensitive system information without an account or user interaction.

CVSS severity6.9
Medium
EPSS probability17.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in SEPPmail Secure Email Gateway before 15.0.4 allows remote attackers to read server environment variables. The unauthenticated GINA V2 /api.app/hello handler accepts op=env and returns the complete process environment instead of restricting the debug operation. The new GINA V2 interface must be explicitly enabled, after which a single remote GET request discloses sensitive system information without an account or user interaction.

The record

CVE
CVE-2026-7864
Published
May 8, 2026
Updated
May 8, 2026
Vendor
SEPPmail
Product
Secure Email Gateway
Classifications
CWE-497, CAPEC-37, T1082
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <15.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SEPPmail · Secure Email Gatewayversion=0 <15.0.4

Published CVSS scores

6.9Switzerland Government Common Vulnerability ProgramCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere
CAPEC-37Retrieve Embedded Sensitive Data
T1082System Information Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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