Cyber Resilience

CVE-2023-23448

Info Disclosure in Sick Ftmg-Esd20Axx Firmware ≤ 2.0

Info Disclosure
Published
15 May 2023
Modified
01 June 2026
Patch / advisory
View advisory
CVSS Score v3.1 5.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.0079 53th percentile
Risk Priority 46 floored blend · peak EPSS

Summary

CVE-2023-23448 is a medium-severity Inclusion of Sensitive Information in Source Code (CWE-540) vulnerability in Sick Ftmg-Esd20Axx Firmware. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Code Repositories (T1213.003); ranked in the top 47% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

Inclusion of Sensitive Information in Source Code in SICK FTMg AIR FLOW SENSOR with Partnumbers 1100214, 1100215, 1100216, 1120114, 1120116, 1122524, 1122526 allows a remote attacker to gain information about valid usernames via analysis of source code.

CWE(s)
CWE-540CWE-668

Related Threats

MITRE ATT&CK Enterprise Techniques

T1213.003 Code Repositories Collection
Adversaries may leverage code repositories to collect valuable information.
attack.mitre.org →
T1552.001 Credentials In Files Credential Access
Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.
attack.mitre.org →
T1552.005 Cloud Instance Metadata API Credential Access
Adversaries may attempt to access the Cloud Instance Metadata API to collect credentials and other sensitive data.
attack.mitre.org →
T1552.007 Container API Credential Access
Adversaries may gather credentials via APIs within a containers environment.
attack.mitre.org →
T1039 Data from Network Shared Drive Collection
Adversaries may search network shares on computers they have compromised to find files of interest.
attack.mitre.org →
T1213 Data from Information Repositories Collection
Adversaries may leverage information repositories to mine valuable information.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-31408Same product: Sick Ftmg-Esd15Axx
CVE-2023-23446Same product: Sick Ftmg-Esd15Axx
CVE-2023-31409Same product: Sick Ftmg-Esd15Axx
CVE-2023-23445Same product: Sick Ftmg-Esd15Axx
CVE-2023-23447Same product: Sick Ftmg-Esd15Axx
CVE-2023-23450Same product: Sick Ftmg-Esd15Axx
CVE-2023-23449Same product: Sick Ftmg-Esd15Axx
CVE-2023-35696Same vendor: Sick
CVE-2023-3270Same vendor: Sick
CVE-2025-49182Same vendor: Sick

Affected Assets

sick
ftmg-esd20axx firmware
≤ 2.0
sick
ftmg-esd25axx firmware
≤ 2.0
sick
ftmg-esn40sxx firmware
≤ 2.0
sick
ftmg-esn50sxx firmware
≤ 2.0
sick
ftmg-esr50sxx firmware
≤ 2.0
sick
ftmg-esr40sxx firmware
≤ 2.0
sick
ftmg-esd15axx firmware
≤ 2.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 8 hardening rules · 7 OS baselines
Validate
Prove the fix (OWASP ASVS)

—

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-20 Use of External Systems
addresses: CWE-668

Controls whether organization resources are exposed to external system spheres by permitting or prohibiting their use.

AC-21 Information Sharing
addresses: CWE-668

The control ensures information is not released into a security sphere where the recipient lacks matching access authorizations.

AC-22 Publicly Accessible Content
addresses: CWE-668

The control ensures information resources are not exposed to the incorrect (public) sphere through review and authorization.

AC-23 Data Mining Protection
addresses: CWE-668

Protects against data mining that would expose resources to unauthorized spheres by enforcing detection and controls.

AC-4 Information Flow Enforcement
addresses: CWE-668

Restricts information flows to ensure resources are not exposed to incorrect or unauthorized spheres.

CA-9 Internal System Connections
addresses: CWE-668

Controlling internal connections prevents exposure of resources to unintended internal spheres.

CM-12 Information Location
addresses: CWE-668

Knowing exact processing and storage locations helps avoid exposure of resources to incorrect spheres.

IR-9 Information Spillage Response
addresses: CWE-540

Detection and removal of spilled information addresses cases where sensitive data was included in source code.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-05 mostly match
prevents

Enforcing least-privilege authorizations directly prevents resources from being exposed outside their intended control sphere.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prohibit embedding secrets or sensitive data in source code.

PR.IR-01 partial match
prevents

Network segmentation and unauthorized-access protections reduce the chance of resources being reachable by the wrong sphere.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.4 Access to source code full match
degrades

Directly restricts access to source code, preventing exposure of embedded sensitive information.

A.8.28 Secure coding mostly match
prevents

Secure coding standards explicitly prohibit hard-coding credentials or sensitive data.

A.5.12 Classification of information partial match
prevents

Classification helps identify source code containing sensitive data so it can be protected.

A.5.15 Access control partial match
prevents

Access control limits who can view or retrieve source code that may contain secrets.

A.8.22 Segregation of networks partial match
mitigates

Placing systems of differing trust levels into separate domains prevents resources from being placed in a sphere where they are reachable by unintended actors.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC practices include removing secrets from code before commit or deployment.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 8 (2 rules)
  • V-248827 OL 8 must not have the rsh-server package installed. prevents CWE-668
  • V-248823 OL 8 must not have the telnet-server package installed. prevents CWE-668
RHEL 7 (1 rule)
  • V-204442 The Red Hat Enterprise Linux operating system must not have the rsh-server package installed. prevents CWE-668
Windows 10 (1 rule)
  • V-220967 The Debug programs user right must only be assigned to the Administrators group. prevents CWE-668
Windows 11 (1 rule)
  • V-253490 The "Debug programs" user right must only be assigned to the Administrators group. prevents CWE-668
Windows Server 2016 (1 rule)
  • V-225079 The Debug programs user right must only be assigned to the Administrators group. prevents CWE-668
Windows Server 2019 (1 rule)
  • V-205757 Windows Server 2019 Debug programs: user right must only be assigned to the Administrators group. prevents CWE-668
Windows Server 2022 (1 rule)
  • V-254500 Windows Server 2022 debug programs user right must only be assigned to the Administrators group. prevents CWE-668

References