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Fencer Vulns
medium 5.3

CVE-2023-23449 json

Observable Response Discrepancy in SICK FTMg AIR FLOW SENSOR with Partnumbers 1100214, 1100215, 1100216, 1120114, 1120116, 1122524, 1122526…

published 2023-05-15 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-27549

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

Observable Response Discrepancy 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 by analyzing challenge responses from the server via the REST interface.

Patch / fix

  • 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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • SICK AG SICK FTMG-ESD15AXX AIR FLOW SENSOR
  • SICK AG SICK FTMG-ESD20AXX AIR FLOW SENSOR
  • SICK AG SICK FTMG-ESD25AXX AIR FLOW SENSOR
  • SICK AG SICK FTMG-ESN40SXX AIR FLOW SENSOR
  • SICK AG SICK FTMG-ESN50SXX AIR FLOW SENSOR
  • SICK AG SICK FTMG-ESR40SXX AIR FLOW SENSOR
  • SICK AG SICK FTMG-ESR50SXX AIR FLOW SENSOR

Classification

Weakness
  • CWE-204 Observable Response Discrepancy
  • CWE-203 Observable Discrepancy

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.