CVE-2026-27661Network attack vector

Authenticated information disclosure via exposed server metadata

Published Mar 10, 2026 · Updated Mar 10, 2026

Sensitive information exposure in Siemens SINEC Security Monitor before 4.9.0 allows remote authenticated users to read SSM Server metadata. The SSM Server exposes confidential metadata and files containing contributor details and email addresses instead of restricting them with the underlying information. Low-privileged application access is required, and the documented consequence is limited to reading disclosed server information.

CVSS severity5.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information exposure in Siemens SINEC Security Monitor before 4.9.0 allows remote authenticated users to read SSM Server metadata. The SSM Server exposes confidential metadata and files containing contributor details and email addresses instead of restricting them with the underlying information. Low-privileged application access is required, and the documented consequence is limited to reading disclosed server information.

The record

CVE
CVE-2026-27661
Published
Mar 10, 2026
Updated
Mar 10, 2026
Vendor
Siemens
Product
SINEC Security Monitor
Classifications
CWE-1230, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 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 <V4.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · SINEC Security Monitorversion=0 <V4.9.0

Published CVSS scores

4.3Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
5.3Siemens ProductCERTCVSS:4.0/AV:N/AC:L/AT:N/PR:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1230Exposure of Sensitive Information Through Metadata
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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