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Description

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

PUBLISHED Reserved 2026-05-21 | Published 2026-06-15 | Updated 2026-06-16 | Assigner Canon




HIGH: 7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Problem types

CWE-295 Improper certificate validation

Product status

Default status
unaffected

1.5.0 or earlier
affected

Default status
unaffected

1.5.0 or earlier
affected

Credits

This issue was discovered by Ryan Hausknecht (@haus3c) finder

References

psirt.canon/advisory-information/cp2026-005/ vendor-advisory

canon.jp/support/support-info/260615vulnerability-response vendor-advisory

www.usa.canon.com/...emediation-for-eos-network-setting-tool vendor-advisory

www.canon-europe.com/support/product-security/ vendor-advisory

cve.org (CVE-2026-9259)

nvd.nist.gov (CVE-2026-9259)

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