CVE-2022-46354

Session-information disclosure via missing security headers

Published Dec 13, 2022 · Updated Apr 22, 2025

Improper access control in Siemens SCALANCE X204RNA web servers before 3.2.7 allows remote attackers to obtain session information. The embedded web server omits security headers that protect confidential session data; Siemens does not identify the missing headers. Exploitation requires adjacent-network access and user interaction, and the reported effect is limited to session-information disclosure.

CVSS severity5.3
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Siemens SCALANCE X204RNA web servers before 3.2.7 allows remote attackers to obtain session information. The embedded web server omits security headers that protect confidential session data; Siemens does not identify the missing headers. Exploitation requires adjacent-network access and user interaction, and the reported effect is limited to session-information disclosure.

The record

CVE
CVE-2022-46354
Published
Dec 13, 2022
Updated
Apr 22, 2025
Vendor
Siemens
Product
SCALANCE X204RNA EEC (PRP)
Classifications
CWE-284, T1539
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record 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=All versions < V3.2.7

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Siemens · SCALANCE X204RNA EEC (PRP)version=All versions < V3.2.7
Siemens · SCALANCE X204RNA EEC (PRP/HSR)version=All versions < V3.2.7
Siemens · SCALANCE X204RNA EEC (HSR)version=All versions < V3.2.7
Siemens · SCALANCE X204RNA (HSR)version=All versions < V3.2.7
Siemens · SCALANCE X204RNA (PRP)version=All versions < V3.2.7

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A: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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1539Steal Web Session Cookie

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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