CVE-2026-84830Network attack vector

Elevated command execution via unescaped configuration values

Published Sep 3, 2026 · Updated Sep 3, 2026

OS command injection in SEPPmail Secure Email Gateway before 15.0.7 allows remote authenticated users to execute elevated commands. Privileged configuration handling passes affected values into operating-system commands without escaping, but the vendor has not identified the fields or code locus. Administrator access is required; successful exploitation can read or alter gateway data and interrupt service under the command process's elevated privileges.

CVSS severity8.6
High
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in SEPPmail Secure Email Gateway before 15.0.7 allows remote authenticated users to execute elevated commands. Privileged configuration handling passes affected values into operating-system commands without escaping, but the vendor has not identified the fields or code locus. Administrator access is required; successful exploitation can read or alter gateway data and interrupt service under the command process's elevated privileges.

The record

CVE
CVE-2026-84830
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
SEPPmail
Product
Secure Email Gateway
Classifications
CWE-78, CWE-269, CAPEC-88, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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 <15.0.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SEPPmail · Secure Email Gatewayversion=0 <15.0.7

Published CVSS scores

8.6NCSC.chCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-269Improper Privilege Management
CAPEC-88OS Command Injection
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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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