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Review reviewHigh

CVE-2026-9258

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

Improper validation of SSH host keys in Canon EOS Network Setting Tool Version 1.5.0 or earlier

CVSS
7.1
EPSS
0.27%
18.4% percentile
CISA KEV
Not listed
Published
2026.06.16
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.27%
Technical severityCVSS 7.1

Vulnerability overview

Improper validation of SSH host keys in Canon EOS Network Setting Tool Version 1.5.0 or earlier

Affected product and versions

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

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 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. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

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