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CVE-2026-9259
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier
High7.1EPSS 0.19%
- Published
- Updated
- Reserved
- Assigned by
- Canon
Description
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CanonCNA (assigner) | 4.0 | High7.1 | 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 |
| CanonCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| NVDNVD · Analyzed | 4.0 | High7.1 | 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 |
- EPSS (exploitation in 30 days)
- 0.19% · top 91% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Weakness
Affected products
Canon Inc. · EOS Network Setting Tool for Windows
- affected 1.5.0 or earlier
Canon Inc. · EOS Network Setting Tool for macOS
- affected 1.5.0 or earlier
References (4)
- https://psirt.canon/advisory-information/cp2026-005/ (opens in a new tab)vendor-advisory
- https://canon.jp/support/support-info/260615vulnerability-response (opens in a new tab)vendor-advisory
- https://www.usa.canon.com/about-us/to-our-customers/cpa2026-005-vulnerability-remediation-for-eos-network-setting-tool (opens in a new tab)vendor-advisory
- https://www.canon-europe.com/support/product-security/ (opens in a new tab)vendor-advisory
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-9259)Record last updated .