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Vulnerability details

CVE-2026-9259

Canon EOS Network Setting Tool for WindowsCanon EOS Network Setting Tool for macOS

CVSS 4.0

7.1High

Official description

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

CVSS scores

Score	Version	Source	Vector
7.1High	4.0	CVEProject cvelistV5 (CNA) (Canon)	`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`
6.5Medium	3.1	CVEProject cvelistV5 (CNA) (Canon)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N`

Affected products

Vendor	Product	Versions	Source
Canon Inc.	EOS Network Setting Tool for Windows	1.5.0 or earlier	CVEProject cvelistV5 (CNA)
Canon Inc.	EOS Network Setting Tool for macOS	1.5.0 or earlier	CVEProject cvelistV5 (CNA)

References and advisories

4

https://psirt.canon/advisory-information/cp2026-005/ vendor-advisory
https://canon.jp/support/support-info/260615vulnerability-response vendor-advisory
https://www.usa.canon.com/about-us/to-our-customers/cpa2026-005-vulnerability-remediation-for-eos-network-setting-tool vendor-advisory
https://www.canon-europe.com/support/product-security/ vendor-advisory

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Details

Published: 2026-06-16
Last updated: 2026-06-16
State: Published
Assigner (CNA): Canon

Exploit prediction (EPSS)

0.19%

Probability of exploitation in 30 days

9.2%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-295
Improper certificate validation