Improper Certificate Validation in Canon Inc. products - CVE-2026-9259

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Main Vulnerability Database Vulnerabilities #VU134584

Improper Certificate Validation in Canon Inc. products - CVE-2026-9259

Published: June 16, 2026


Vulnerability identifier: #VU134584
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2026-9259
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Canon Inc.
Affected software:
EOS Network Setting Tool for macOS
EOS Network Setting Tool for Windows
EOS Utility

Detailed vulnerability description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper validation of server certificate. A remote attacker can obtain credentials used for FTP/FTPS/SFTP communication test functions.


How to mitigate CVE-2026-9259

Install updates from vendor's website.

Sources