CVE-2022-25755

Session information disclosure via missing security headers

Published Apr 12, 2022 · Updated Aug 3, 2024

Improper access control in Siemens SCALANCE X-300 firmware before 4.1.4 allows remote attackers to obtain confidential session data. The integrated web server omits unspecified security headers that would otherwise protect session information from extraction. Exploitation requires adjacent-network access, high complexity, and user interaction; published details do not identify the headers or exact interaction.

CVSS severityUnavailable
Unscored
EPSS probability1.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper access control in Siemens SCALANCE X-300 firmware before 4.1.4 allows remote attackers to obtain confidential session data. The integrated web server omits unspecified security headers that would otherwise protect session information from extraction. Exploitation requires adjacent-network access, high complexity, and user interaction; published details do not identify the headers or exact interaction.

The record

CVE
CVE-2022-25755
Published
Apr 12, 2022
Updated
Aug 3, 2024
Vendor
Siemens
Product
SCALANCE X307-2 EEC (2x 230V)
Classifications
CWE-284, T1539
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=All versions < V4.1.4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Siemens · SCALANCE X307-2 EEC (2x 230V)version=All versions < V4.1.4
Siemens · SCALANCE X308-2Mversion=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE (230V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE XR324-12M (24V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X307-3LDversion=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (24V)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE (24V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (2x 24V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X320-1 FEversion=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (2x 230V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-12M (230V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X310FEversion=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (2x 24V)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (24V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE XR324-12M (24V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE (24V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (2x 24V)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (24V, coated)version=All versions < V4.1.4
Siemens · SCALANCE X310version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (230V)version=All versions < V4.1.4
Siemens · SCALANCE X308-2version=All versions < V4.1.4
Siemens · SCALANCE XR324-12M TS (24V)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (2x 24V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE (230V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (230V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (24V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (24V, coated)version=All versions < V4.1.4
Siemens · SCALANCE X307-3version=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (24V)version=All versions < V4.1.4
Siemens · SCALANCE X308-2LH+version=All versions < V4.1.4
Siemens · SCALANCE X308-2M PoEversion=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (230V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (2x 24V, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X302-7 EEC (2x 230V)version=All versions < V4.1.4
Siemens · SCALANCE X308-2M TSversion=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (230V)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on rear)version=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (2x 230V, coated)version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X306-1LD FEversion=All versions < V4.1.4
Siemens · SCALANCE XR324-12M (230V, ports on front)version=All versions < V4.1.4
Siemens · SCALANCE X304-2FEversion=All versions < V4.1.4
Siemens · SCALANCE X308-2LDversion=All versions < V4.1.4
Siemens · SCALANCE X307-2 EEC (2x 24V, coated)version=All versions < V4.1.4
Siemens · SCALANCE X320-1-2LD FEversion=All versions < V4.1.4
Siemens · SCALANCE X408-2version=All versions < V4.1.4
Siemens · SCALANCE XR324-4M PoE TS (24V, ports on front)version=All versions < V4.1.4
Siemens · SIPLUS NET SCALANCE X308-2version=All versions < V4.1.4

Published CVSS scores

2.6Siemens ProductCERTCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo