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Fencer Vulns
critical 9.8

CVE-2025-54807 json

Dover Fueling Solutions ProGauge MagLink LX 4 Devices Use of Hard-coded Cryptographic Key

published 2025-09-18 13 mo ago modified 2026-10-18 21 d ago also EUVD-2025-30193

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

The secret used for validating authentication tokens is hardcoded in device firmware for affected versions. An attacker who obtains the signing key can bypass authentication, gaining complete access to the system.

Patch / fix

  • Dover Fueling Solutions ProGauge MagLink LX 4 4.20.3
  • Dover Fueling Solutions ProGauge MagLink LX Plus 4.20.3
  • Dover Fueling Solutions ProGauge MagLink LX Ultimate 5.20.3

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-261-07 updated cvss 9.8

Dover Fueling Solutions ProGauge MagLink LX4 Devices

  • Dover Fueling Solutions ProGauge MagLink LX 4 <4.20.3 Dover Fueling Solutions ProGauge MagLink LX Plus <4.20.3 Dover Fueling Solutions ProGauge MagLink LX Ultimate <5.20.3
    affected: mitigation “For MagLink LX Ultimate devices, Dover Fueling Solutions recommends users update to version 5.20.3 or later.” doverfuelingsolutions.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
13 mo ago

Exploit prediction

0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Dover Fueling Solutions ProGauge MagLink LX 4
  • Dover Fueling Solutions ProGauge MagLink LX Plus
  • Dover Fueling Solutions ProGauge MagLink LX Ultimate

Classification

Weakness
  • CWE-321 Use of Hard-coded Cryptographic Key

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.