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CVE-2023-3271· NVD / CVE Program· CNA SICK AG

Improper Access Control in the SICK ICR890-4 could allow an unauthenticated remote attacker to gather information about the system and downl

Improper Access Control in the SICK ICR890-4 could allow an unauthenticated remote attacker to gather information about the system and download data via the REST API by accessing unauthenticated endpoints.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Jul 10, 2023
Updated
Jun 17, 2026
EPSS
0.9% · 59th percentile
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Report tools

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Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.5
CNA · SICK AG
8.2
0.7 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
sickicr890-4 firmware
sickicr890-4

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • sick icr890-4 firmwarebefore 2.5.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (SICK AG). Independent of NVD's CPE analysis and usually ahead of it.

  • SICK AG ICR890-4

    • before 2.5.0affected · *

Same product

sick: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-3273Improper Access Control in the SICK ICR890-4 could allow an unauthenticated remote attacker to affect the availability of the device by chan
    30Monitor
  • CVE-2023-3272Cleartext Transmission of Sensitive Information in the SICK ICR890-4 could allow a remote attacker to gather sensitive information by interc
    30Monitor
  • CVE-2023-3270Exposure of Sensitive Information to an Unauthorized Actor in the SICK ICR890-4 could allow an unauthenticated remote attacker to retrieve s
    30Monitor
  • CVE-2023-35697Improper Restriction of Excessive Authentication Attempts in the SICK ICR890-4 could allow a remote attacker to brute-force user credentials
    30Monitor
  • CVE-2023-35696Unauthenticated endpoints in the SICK ICR890-4 could allow an unauthenticated remote attacker to retrieve sensitive information about the de
    30Monitor
  • CVE-2023-35698Observable Response Discrepancy in the SICK ICR890-4 could allow a remote attacker to identify valid usernames for the FTP server from the r
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
SICK AG ICR890-42.5.0Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-primary

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records