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PatchSiren cyber security CVE debrief

CVE-2026-9261 Canon Inc. CVE debrief

CVE-2026-9261 is a HIGH severity vulnerability with a CVSS score of 7.6. It was published on 2026-06-16T00:16:35.887Z and has not been modified since its publication. The vulnerability affects Canon EOS Network Setting Tool Version 1.5.0 or earlier and is related to the use of weak SSH cryptographic algorithms. The Common Weakness Enumeration (CWE) for this vulnerability is CWE-327.

Vendor
Canon Inc.
Product
EOS Network Setting Tool for Windows
CVSS
HIGH 7.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-16
Original CVE updated
2026-06-18
Advisory published
2026-06-16
Advisory updated
2026-06-18

Who should care

Users of Canon EOS Network Setting Tool Version 1.5.0 or earlier should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by the use of weak SSH cryptographic algorithms in Canon EOS Network Setting Tool Version 1.5.0 or earlier. This could allow an attacker to compromise the security of the system.

Defensive priority

HIGH

Recommended defensive actions

  • Users should update Canon EOS Network Setting Tool to a version that is not vulnerable.
  • If an update is not available, users should consider using alternative tools or workarounds to minimize the risk.

Evidence notes

The evidence for this CVE comes from the National Vulnerability Database (NVD) and the CVE.org website.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-9261 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-9261

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-9261 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-9261

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://canon.jp/support/support-info/260615vulnerability-response

    f98c90f0-e9bd-4fa7-911b-51993f3571fd

  • Source reference

    Unverified legacy reference

    URL: https://psirt.canon/advisory-information/cp2026-005/

    f98c90f0-e9bd-4fa7-911b-51993f3571fd

  • Source reference

    Unverified legacy reference

    URL: https://www.canon-europe.com/support/product-security/

    f98c90f0-e9bd-4fa7-911b-51993f3571fd

  • Source reference

    Unverified legacy reference

    URL: https://www.usa.canon.com/about-us/to-our-customers/cpa2026-005-vulnerability-remediation-for-eos-network-setting-tool

    f98c90f0-e9bd-4fa7-911b-51993f3571fd

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.