Review reviewHigh

CVE-2026-9259

Canon Inc. EOS Network Setting Tool for Windows, EOS Network Setting Tool for macOS, eos network setting tool

Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.19%

Technical severityCVSS 7.1

Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier

Product: Canon Inc. EOS Network Setting Tool for Windows, EOS Network Setting Tool for macOS, eos network setting tool
Affected versions: 1.5.0 or earlier, < 1.5.1
Fixed versions: 1.5.1

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Canon Inc. EOS Network Setting Tool for Windows, EOS Network Setting Tool for macOS, eos network setting tool and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

CVSS vector: 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: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
CWE: CWE-295