CVE-2023-23445Network attack vector

Unauthorized data access via REST authorization failure

Published May 15, 2023 · Updated Jun 1, 2026

Improper access control in SICK FTMg firmware before 2.x allows remote authenticated users to read protected data through the REST interface. The REST authorization layer accepts a low-privilege account for data-field requests without enforcing the permissions intended for those fields. Network access and an unprivileged account are required; exploitation discloses sensor data but does not alter it or interrupt service.

CVSS severity7.5
High
EPSS probability0.66%
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 SICK FTMg firmware before 2.x allows remote authenticated users to read protected data through the REST interface. The REST authorization layer accepts a low-privilege account for data-field requests without enforcing the permissions intended for those fields. Network access and an unprivileged account are required; exploitation discloses sensor data but does not alter it or interrupt service.

The record

CVE
CVE-2023-23445
Published
May 15, 2023
Updated
Jun 1, 2026
Vendor
SICK AG
Product
FTMG-ESD15AXX
Classifications
CWE-284, T0866
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 15, 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

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 firmware versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SICK AG · FTMG-ESD15AXXversion=all firmware versions
SICK AG · FTMG-ESN50SXXversion=all firmware versions
SICK AG · FTMG-ESR40SXXversion=all firmware versions
SICK AG · FTMG-ESD20AXXversion=all firmware versions
SICK AG · FTMG-ESD25AXXversion=all firmware versions
SICK AG · FTMG-ESR50SXXversion=all firmware versions
SICK AG · FTMG-ESN40SXXversion=all firmware versions

Published CVSS scores

7.5SICK AGCVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T0866Exploitation of Remote Services

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