Published:2026/06/16  Last Updated:2026/06/16

JVNVU#98100934
Multiple vulnerabilities in Canon EOS Network Setting Tool

Overview

PC Software EOS Network Setting Tool provided by Canon Inc. contains multiple vulnerabilities.

Products Affected

  • PC Software EOS Network Setting Tool (For Windows) Versions 1.5.0 and earlier
  • PC Software EOS Network Setting Tool (For macOS) Versions 1.5.0 and earlier
The affected software is included in EOS Utility Versions 3.12.0 through 3.20.20.

Description

FTP/FTPS/SFTP Communication Testing features of PC Software EOS Network Setting Tool provided by Canon Inc. contain multiple vulnerabilities listed below.

  • Improper validation of SSH host key (CWE-295)
    • CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Base Score 7.1
    • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Base Score 6.5
    • CVE-2026-9258
  • Improper validation of server certificate (CWE-295)
    • CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Base Score 7.1
    • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Base Score 6.5
    • CVE-2026-9259
  • Use of hard-coded cryptographic key (CWE-321)
    • CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Base Score 6.9
    • CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Base Score 6.2
    • CVE-2026-9260
  • Use of a vulnerable SSH encryption algorithm (CWE-327)
    • CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Base Score 7.6
    • CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N Base Score 6.8
    • CVE-2026-9261
  • Default FTP connection settings use an insecure protocol (CWE-1188)
    • CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Base Score 7.1
    • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Base Score 6.5
    • CVE-2026-9262

Impact

Credentials used for FTP/FTPS/SFTP communication test functions may be obtained.

Solution

Update the Software
Update the software to the latest version according to the information provided by the developer.

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Credit

Canon Inc. reported these vulnerabilities to JPCERT/CC to notify users of the solutions through JVN.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE
JVN iPedia