CVE-2023-35696Network attack vector

Information disclosure via unauthenticated HTTP endpoints

Published Jul 10, 2023 · Updated Jun 1, 2026

Exposure of resources in SICK AG ICR890-4 firmware before 2.5.0 allows remote attackers to retrieve sensitive device information over HTTP. SICK identifies HTTP endpoints that return sensitive device information without authentication but does not publish their paths or disclosed fields. Network access to the appliance is sufficient; the documented impact is read-only disclosure, with no integrity or availability effect.

CVSS severity7.5
High
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Exposure of resources in SICK AG ICR890-4 firmware before 2.5.0 allows remote attackers to retrieve sensitive device information over HTTP. SICK identifies HTTP endpoints that return sensitive device information without authentication but does not publish their paths or disclosed fields. Network access to the appliance is sufficient; the documented impact is read-only disclosure, with no integrity or availability effect.

The record

CVE
CVE-2023-35696
Published
Jul 10, 2023
Updated
Jun 1, 2026
Vendor
SICK AG
Product
ICR890-4
Classifications
CWE-668, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 1, 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 <2.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SICK AG · ICR890-4version=0 <2.5.0

Published CVSS scores

7.5SICK AGCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
T1190Exploit Public-Facing Application

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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