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Fencer Vulns
medium 4.3

CVE-2025-8452 json

Unauthenticated leak of sensitive information affecting multiple models from Brother Industries, Ltd., Toshiba Tec, and Konica Minolta, Inc.

published 2025-08-12 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-24270

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

By using the "uscan" protocol provided by the eSCL specification, an attacker can discover the serial number of multi-function printers that implement the Brother-provided firmware. This serial number can, in turn, can be leveraged by the flaw described by CVE-2024-51978 to calculate the default administrator password. This flaw is similar to CVE-2024-51977, with the only difference being the protocol by which an attacker can use to learn the remote device's serial number. The eSCL/uscan vector is typically only exposed on the local network. Any discovery service that implements the eSCL specification can be used to exploit this vulnerability, and one such implementation is the runZero Explorer. Changing the default administrator password will render this vulnerability virtually worthless, since the calculated default administrator password would no longer be the correct password.

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
14 mo ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • help.runzero.com https://help.runzero.com/docs/installing-an-explorer/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • Brother Industries, Ltd DCP-L8410CDW
  • Brother Industries, Ltd MFC-L8610CDW
  • Brother Industries, Ltd MFC-L8690CDW
  • Brother Industries, Ltd MFC-L8900CDW
  • Brother Industries, Ltd MFC-L9570CDW
  • Brother Industries, Ltd MFC-L9577CDW
  • Brother Industries, Ltd MFC-L8610CDW(for Japan)
  • Brother Industries, Ltd MFC-L9570CDW(for Japan)
  • Brother Industries, Ltd HL-L5218DN
  • Brother Industries, Ltd HL-L5228DW
  • Brother Industries, Ltd DCP-L5510DN
  • Brother Industries, Ltd DCP-L5512DN
  • Brother Industries, Ltd DCP-L5518DN
  • Brother Industries, Ltd DCP-L5510DW
  • Brother Industries, Ltd DCP-L5610DN
  • Brother Industries, Ltd DCP-L5660DN
  • Brother Industries, Ltd DCP-L5662DN
  • Brother Industries, Ltd MFC-L5710DN
  • Brother Industries, Ltd MFC-L5715DN
  • Brother Industries, Ltd MFC-L5718DN
  • Brother Industries, Ltd MFC-L5710DW
  • Brother Industries, Ltd MFC-L5715DW
  • Brother Industries, Ltd MFC-L5717DW
  • Brother Industries, Ltd MFC-L5728DW
  • Brother Industries, Ltd MFC-L5912DW
  • Brother Industries, Ltd MFC-L5915DW
  • Brother Industries, Ltd MFC-L6710DW
  • Brother Industries, Ltd MFC-L6720DW
  • Brother Industries, Ltd MFC-L6810DW
  • Brother Industries, Ltd MFC-L6910DN
  • Brother Industries, Ltd MFC-L6915DN
  • Brother Industries, Ltd MFC-L6915DN CSP
  • Brother Industries, Ltd MFC-L6912DW
  • Brother Industries, Ltd MFC-L6915DW
  • Brother Industries, Ltd MFC-EX910
  • Brother Industries, Ltd MFC-EX915DW
  • Brother Industries, Ltd MFC-L6820DW
  • Brother Industries, Ltd MFC-L9610CDN
  • Brother Industries, Ltd MFC-L9630CDN
  • Brother Industries, Ltd MFC-L9635CDN
  • Brother Industries, Ltd MFC-L9670CDN
  • Brother Industries, Ltd NFC-EX670
  • Brother Industries, Ltd MFC-EX670W
  • Brother Industries, Ltd DCP-L3555CDW
  • Brother Industries, Ltd DCP-L3560CDW
  • Brother Industries, Ltd DCP-L3568CDW
  • Brother Industries, Ltd MFC-L3720CDW
  • Brother Industries, Ltd MFC-L3740CDW
  • Brother Industries, Ltd MFC-L3740CDWE
  • Brother Industries, Ltd MFC-L3755CDW

Classification

Weakness
  • CWE-538 Insertion of Sensitive Information into Externally-Accessible File or Directory

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.